1 | Content-Type: multipart/alternative;
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2 | boundary="------------88r39cPU0W00kc0b7dxFagps"
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3 | Message-ID: <cfabfce4-6cae-3486-3e3d-b8b471432fdb@yale.edu>
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4 | Date: Sun, 27 Aug 2023 16:28:00 -0400
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5 | User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0)
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6 | Gecko/20100101 Thunderbird/102.14.0
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7 | Subject: Re: Subversion sasl authentication fails with openssl3.1
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8 | Content-Language: en-US
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9 | To: Daniel Sahlberg <daniel.l.sahlberg@gmail.com>
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10 | Cc: "users@subversion.apache.org" <users@subversion.apache.org>,
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11 | "macports-dev@lists.macports.org" <macports-dev@lists.macports.org>
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12 | References: <5d19a848-dbc1-8656-e0d1-c1d9440d4f65@yale.edu>
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13 | <CAMHy98P8eNQu8eXS0RDC5Jp4-NSAqbRhzxg4pmNDa_wUGMqphA@mail.gmail.com>
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14 | From: Michael Fischer <michael.fischer@yale.edu>
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15 | In-Reply-To: <CAMHy98P8eNQu8eXS0RDC5Jp4-NSAqbRhzxg4pmNDa_wUGMqphA@mail.gmail.com>
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16 | MIME-Version: 1.0
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17 |
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18 | --------------88r39cPU0W00kc0b7dxFagps
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19 | Content-Type: text/plain; charset=UTF-8; format=flowed
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20 | Content-Transfer-Encoding: 8bit
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21 |
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22 | Dear Daniel,
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23 |
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24 | Thank you for the careful reply. Some answers are interspersed below.
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25 |
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26 | On 8/22/23 7:40 AM, Daniel Sahlberg wrote:
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27 | > Den sön 20 aug. 2023 kl 17:14 skrev Fischer, Michael
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28 | > <michael.fischer@yale.edu>:
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29 | >
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30 | > I have many repositories configured for sasl authentication. The
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31 | > svn client for Mac osx, built using MacPorts, recently stopped
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32 | > working. I first reported the problem to the MacPorts bug list
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33 | > but have been advised to report it to the subversion developers.
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34 | > (See below.)
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35 | >
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36 | > Here's the error I get when trying to update a working directory.
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37 | >
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38 | > > svn update
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39 | > Updating '.':
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40 | > svn: E170013: Unable to connect to a repository at URL
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41 | > 'svn://ohia.cs.yale.edu/cs414-2022f'
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42 | > svn: E170001: SASL authentication error: SASL(-1): generic
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43 | > failure: internal error: failed to init cipher 'rc4'
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44 | >
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45 | > What is the version of Subversion on the above server? What version of
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46 | > Sasl and OpenSSL?
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47 | subversion: 1.14.2
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48 | cyrus-sasl: 2.1.28
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49 | GNU sasl library (libgsasl): 1.10.0
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50 | OpenSSL: 3.09; also 1.1.1q
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51 |
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52 | The server is running Fedora 38 linux. I don't know which sasl library
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53 | the server is actually linked to, but the server works find with all
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54 | clients except for the MacPorts one.
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55 | >
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56 | > The problem seems to be that Sasl3.1 is not upwards compatible
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57 | > with sasl2.
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58 | >
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59 | >
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60 | > Are you confusing Sasl with OpenSSL here? I believe Sasl is only on
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61 | > version 2.1 while OpenSSL recently released versions 3.0 and 3.1
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62 | > (there never was an OpenSSL 2.x).
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63 | Yes, I'm afraid so. 😅
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64 | I believe MacPorts is linking to openssl3, which is why my workaround
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65 | (below) fixes the problem.
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66 | >
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67 | > This causes the Macports build of svn to fail when attempting to
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68 | > log into a server configured to use_sasl. A workaround is to
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69 | > rebuild the openssl3 port with the command
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70 | >
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71 | > sudo port upgrade --enforce-variants openssl3 +legacy
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72 | >
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73 | > I'm guessing, based on the "+legacy" argument, that the server you try
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74 | > to connect to is using RC4 and since this is deprecated in OpenSSL 3
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75 | > (see
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76 | > https://www.openssl.org/docs/man3.0/man7/OSSL_PROVIDER-legacy.html
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77 | > <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.openssl.org%2Fdocs%2Fman3.0%2Fman7%2FOSSL_PROVIDER-legacy.html&data=05%7C01%7Cmichael.fischer%40yale.edu%7C9a90417947044fd239c108dba304912b%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C0%7C638283012293627329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=hYDWfiiN2Ba3ADHKyteHSe23acOsRppdckHFOyP51Wk%3D&reserved=0>)
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78 | > you are unable to connect.
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79 | >
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80 | > If this assumption is correct, then this is neither a bug in
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81 | > Subversion, nor in Sasl or OpenSSL. Rather it is a case of mismatching
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82 | > configuration and software versions between the server and the client.
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83 | > Updating the server to support newer chiphers should probably resolve
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84 | > the situation.
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85 | I think you are correct in your analysis of why the MacPorts client
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86 | fails to connect without the "+legacy" argument.
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87 | >
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88 | > I reported this as MacPorts bug #67931
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89 | > <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftrac.macports.org%2Fticket%2F67931&data=05%7C01%7Cmichael.fischer%40yale.edu%7C9a90417947044fd239c108dba304912b%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C0%7C638283012293627329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=BlE0O8GrVN1LfkcZ1nWJEUmCjTW9iTMH9%2B9jj%2FaBN2g%3D&reserved=0>.
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90 | > A comment by ryandesign said,
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91 | >
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92 | > A port "can't" depend on a variant of another port (see
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93 | > #126). It can use
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94 | > the active_variants 1.1 portgroup, but that requires manual
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95 | > intervention
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96 | > from the user, and prevents the buildbot from automatically
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97 | > creating
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98 | > binary archives of the port.
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99 | >
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100 | > Have you reported this problem to the developers of
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101 | > Subversion? If not,
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102 | > please do, and put the URL of the report here.
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103 | >
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104 | > I am attempting to do so here. Apparently the email is required
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105 | > before I can make a bug report.
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106 | >
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107 | > Please let me know how to proceed with the bug report.
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108 | >
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109 | >
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110 | > You've done absolutely correct in sending an e-mail here. I assume you
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111 | > have already seen the guidance on the website
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112 | > (https://subversion.apache.org/docs/community-guide/issues.html
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113 | > <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsubversion.apache.org%2Fdocs%2Fcommunity-guide%2Fissues.html&data=05%7C01%7Cmichael.fischer%40yale.edu%7C9a90417947044fd239c108dba304912b%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C0%7C638283012293627329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=5OYB0Up6PTjR%2FKylxFgnrkHpwpHPW5cMZyKzN8%2F8WPw%3D&reserved=0>)
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114 | > on why we don't want anything added to the issue tracker before it has
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115 | > been accepted as a bug on the mailing list.
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116 | >
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117 | > Kind regards,
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118 | > Daniel Sahlberg
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119 | You've convinced me that this is not a subversion problem but rather one
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120 | of attempting to build it against the openssl3 library rather than
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121 | against the cyrus-sasl2 library. This would seem to be a problem with
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122 | the MacPorts build script attempting to use the wrong library for
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123 | subversion. MacPorts does know about cyrus-sasl2 (and in fact it is
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124 | installed on my node). Unfortunately, I do not know enough about how
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125 | MacPorts works to suggest the fix, but I think it is clear now what
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126 | needs to be done.
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127 |
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128 | Thank you once again for your help and for the effort you put into
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129 | addressing my concerns.
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130 |
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131 | Best regards,
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132 | --Mike
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133 |
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134 | --
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135 | ===============================================
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136 | | Michael Fischer<michael.fischer@yale.edu> |
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137 | | Professor of Computer Science |
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138 | ===============================================
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139 |
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140 | --------------88r39cPU0W00kc0b7dxFagps
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141 | Content-Type: text/html; charset=UTF-8
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142 | Content-Transfer-Encoding: 8bit
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143 |
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144 | <html><head>
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145 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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146 | </head>
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147 | <body>
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148 | Dear Daniel,<br>
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149 | <br>
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150 | Thank you for the careful reply. Some answers are interspersed
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151 | below.<br>
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152 | <br>
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153 | <div class="moz-cite-prefix">On 8/22/23 7:40 AM, Daniel Sahlberg
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154 | wrote:<br>
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155 | </div>
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156 | <blockquote type="cite" cite="mid:CAMHy98P8eNQu8eXS0RDC5Jp4-NSAqbRhzxg4pmNDa_wUGMqphA@mail.gmail.com">
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157 |
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158 | <div dir="ltr">
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159 | <div dir="ltr">
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160 | <div dir="ltr">
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161 | <div dir="ltr">Den sön 20 aug. 2023 kl 17:14 skrev Fischer,
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162 | Michael <<a href="mailto:michael.fischer@yale.edu" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">michael.fischer@yale.edu</a>>:<br>
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163 | </div>
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164 | <div class="gmail_quote">
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165 | <blockquote class="gmail_quote" style="margin:0px 0px 0px
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166 | 0.8ex;border-left:1px solid
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167 | rgb(204,204,204);padding-left:1ex">
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168 | <div>
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169 | I have many repositories configured for sasl
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170 | authentication. The svn client for Mac osx, built
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171 | using MacPorts, recently stopped working. I first
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172 | reported the problem to the MacPorts bug list but have
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173 | been advised to report it to the subversion
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174 | developers. (See below.)<br>
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175 | <br>
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176 | Here's the error I get when trying to update a working
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177 | directory.<br>
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178 | <blockquote><font face="monospace">> svn update<br>
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179 | Updating '.':<br>
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180 | svn: E170013: Unable to connect to a repository at
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181 | URL '<a moz-do-not-send="true">svn://ohia.cs.yale.edu/cs414-2022f</a>'<br>
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182 | svn: E170001: SASL authentication error: SASL(-1):
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183 | generic failure: internal error: failed to init
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184 | cipher 'rc4'</font></blockquote>
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185 | </div>
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186 | </blockquote>
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187 | <div>What is the version of Subversion on the above
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188 | server? What version of Sasl and OpenSSL?<br>
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189 | </div>
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190 | </div>
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191 | </div>
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192 | </div>
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193 | </div>
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194 | </blockquote>
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195 | subversion: 1.14.2<br>
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196 | cyrus-sasl: 2.1.28<br>
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197 | GNU sasl library (libgsasl): 1.10.0<br>
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198 | OpenSSL: 3.09; also 1.1.1q<br>
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199 | <br>
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200 | The server is running Fedora 38 linux. I don't know which sasl
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201 | library the server is actually linked to, but the server works find
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202 | with all clients except for the MacPorts one.<br>
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203 | <blockquote type="cite" cite="mid:CAMHy98P8eNQu8eXS0RDC5Jp4-NSAqbRhzxg4pmNDa_wUGMqphA@mail.gmail.com">
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204 | <div dir="ltr">
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205 | <div dir="ltr">
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206 | <div dir="ltr">
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207 | <div class="gmail_quote">
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208 | <blockquote class="gmail_quote" style="margin:0px 0px 0px
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209 | 0.8ex;border-left:1px solid
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210 | rgb(204,204,204);padding-left:1ex">
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211 | <div>
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212 | The problem seems to be that Sasl3.1 is not upwards
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213 | compatible with sasl2. </div>
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214 | </blockquote>
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215 | <div><br>
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216 | </div>
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217 | <div>Are you confusing Sasl with OpenSSL here? I believe
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218 | Sasl is only on version 2.1 while OpenSSL recently
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219 | released versions 3.0 and 3.1 (there never was an
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220 | OpenSSL 2.x).</div>
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221 | </div>
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222 | </div>
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223 | </div>
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224 | </div>
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225 | </blockquote>
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226 | Yes, I'm afraid so. 😅<br>
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227 | I believe MacPorts is linking to openssl3, which is why my
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228 | workaround (below) fixes the problem.<br>
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229 | <blockquote type="cite" cite="mid:CAMHy98P8eNQu8eXS0RDC5Jp4-NSAqbRhzxg4pmNDa_wUGMqphA@mail.gmail.com">
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230 | <div dir="ltr">
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231 | <div dir="ltr">
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232 | <div dir="ltr">
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233 | <div class="gmail_quote">
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234 | <blockquote class="gmail_quote" style="margin:0px 0px 0px
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235 | 0.8ex;border-left:1px solid
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236 | rgb(204,204,204);padding-left:1ex">
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237 | <div>This causes the Macports build of svn to fail when
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238 | attempting to log into a server configured to
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239 | use_sasl. A workaround is to rebuild the openssl3
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240 | port with the command<br>
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241 | <blockquote>
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242 | <pre>sudo port upgrade --enforce-variants openssl3 +legacy</pre>
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243 | </blockquote>
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244 | </div>
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245 | </blockquote>
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246 | <div>I'm guessing, based on the "+legacy" argument, that
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247 | the server you try to connect to is using RC4 and since
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248 | this is deprecated in OpenSSL 3 (see <a href="https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.openssl.org%2Fdocs%2Fman3.0%2Fman7%2FOSSL_PROVIDER-legacy.html&data=05%7C01%7Cmichael.fischer%40yale.edu%7C9a90417947044fd239c108dba304912b%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C0%7C638283012293627329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=hYDWfiiN2Ba3ADHKyteHSe23acOsRppdckHFOyP51Wk%3D&reserved=0" originalsrc="https://www.openssl.org/docs/man3.0/man7/OSSL_PROVIDER-legacy.html" shash="wXK6W+3aXAS7rAOdvNeo9YTTPByDwPB3gk4kkPlbV2jMmbAr5ozn3iBeDrBxk5XfNNKSAUFWxDfSYcw/YVKyVxdmSG4higlod2f3ozDBksh1XuCZQlbWMxsK46dNXXKNn5FC58xiHghqLEeL+PR/VhdYzP3mBtIJuW2OlYkepaM=" moz-do-not-send="true">https://www.openssl.org/docs/man3.0/man7/OSSL_PROVIDER-legacy.html</a>)
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249 | you are unable to connect.</div>
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250 | <div><br>
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251 | </div>
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252 | <div>If this assumption is correct, then this is neither a
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253 | bug in Subversion, nor in Sasl or OpenSSL. Rather it is
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254 | a case of mismatching configuration and software
|
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255 | versions between the server and the client. Updating the
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256 | server to support newer chiphers should probably resolve
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257 | the situation.</div>
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258 | </div>
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259 | </div>
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260 | </div>
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261 | </div>
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262 | </blockquote>
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263 | I think you are correct in your analysis of why the MacPorts client
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264 | fails to connect without the "+legacy" argument.<br>
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265 | <blockquote type="cite" cite="mid:CAMHy98P8eNQu8eXS0RDC5Jp4-NSAqbRhzxg4pmNDa_wUGMqphA@mail.gmail.com">
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266 | <div dir="ltr">
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267 | <div dir="ltr">
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268 | <div dir="ltr">
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269 | <div class="gmail_quote">
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270 | <blockquote class="gmail_quote" style="margin:0px 0px 0px
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271 | 0.8ex;border-left:1px solid
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272 | rgb(204,204,204);padding-left:1ex">
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273 | <div>
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274 | <blockquote>
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275 | </blockquote>
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276 | I reported this as MacPorts bug <a href="https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftrac.macports.org%2Fticket%2F67931&data=05%7C01%7Cmichael.fischer%40yale.edu%7C9a90417947044fd239c108dba304912b%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C0%7C638283012293627329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=BlE0O8GrVN1LfkcZ1nWJEUmCjTW9iTMH9%2B9jj%2FaBN2g%3D&reserved=0" originalsrc="https://trac.macports.org/ticket/67931" shash="fveHhXoY3WuwPnUlT/3erPuzuF0je1oRioA8VYa0wX0/2MGKylgNPD96hGCIH1bxAke/0QJl9yFIMoz3CzSuUqyRVC09BsNflJ7eZNd9z/P4crv3DPFS90MAVwYE5zyglufREAJez+TEesyu6NDqwk74vIuplYfb5q6VNoTap48=" target="_blank" moz-do-not-send="true">
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277 | #67931</a>. A comment by ryandesign said,<br>
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278 | <blockquote> A port "can't" depend on a variant of
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279 | another port (see #126). It can use<br>
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280 | the active_variants 1.1 portgroup, but that
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281 | requires manual intervention<br>
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282 | from the user, and prevents the buildbot from
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283 | automatically creating<br>
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284 | binary archives of the port.<br>
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285 | <br>
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286 | Have you reported this problem to the developers of
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287 | Subversion? If not,<br>
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288 | please do, and put the URL of the report here.<br>
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289 | </blockquote>
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290 | I am attempting to do so here. Apparently the email
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291 | is required before I can make a bug report.<br>
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292 | <br>
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293 | Please let me know how to proceed with the bug report.<br>
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294 | </div>
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295 | </blockquote>
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296 | <div><br>
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297 | </div>
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298 | <div>You've done absolutely correct in sending an e-mail
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299 | here. I assume you have already seen the guidance on the
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300 | website (<a href="https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsubversion.apache.org%2Fdocs%2Fcommunity-guide%2Fissues.html&data=05%7C01%7Cmichael.fischer%40yale.edu%7C9a90417947044fd239c108dba304912b%7Cdd8cbebb21394df8b4114e3e87abeb5c%7C0%7C0%7C638283012293627329%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=5OYB0Up6PTjR%2FKylxFgnrkHpwpHPW5cMZyKzN8%2F8WPw%3D&reserved=0" originalsrc="https://subversion.apache.org/docs/community-guide/issues.html" shash="ecBkVR+PcbRLr9tNW1hKN/5Z6QosNUNDYaze06O2JRB0tLp/othPYcpD/+Q1BeX0hIGmdJ9EqassCe5ca4zbuFWWSbWniUBMz8jCY0n1HBUncaA+uvlEqXx+y8+nlW46O6x/UUcgigqFvoNRjEki1edNIUmEbiFavH1fGyiaO+4=" moz-do-not-send="true">https://subversion.apache.org/docs/community-guide/issues.html</a>)
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301 | on why we don't want anything added to the issue tracker
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302 | before it has been accepted as a bug on the mailing
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303 | list.</div>
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304 | <div><br>
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305 | </div>
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306 | <div>Kind regards,</div>
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307 | <div>Daniel Sahlberg</div>
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308 | </div>
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309 | </div>
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310 | </div>
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311 | </div>
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312 | </blockquote>
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313 | You've convinced me that this is not a subversion problem but rather
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314 | one of attempting to build it against the openssl3 library rather
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315 | than against the cyrus-sasl2 library. This would seem to be a
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316 | problem with the MacPorts build script attempting to use the wrong
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317 | library for subversion. MacPorts does know about cyrus-sasl2 (and
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318 | in fact it is installed on my node). Unfortunately, I do not know
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319 | enough about how MacPorts works to suggest the fix, but I think it
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320 | is clear now what needs to be done.<br>
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321 | <br>
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322 | Thank you once again for your help and for the effort you put into
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323 | addressing my concerns.<br>
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324 | <br>
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325 | Best regards,<br>
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326 | --Mike<br>
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327 | <pre class="moz-signature" cols="72">--
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328 | ===============================================
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329 | | Michael Fischer <a class="moz-txt-link-rfc2396E" href="mailto:michael.fischer@yale.edu"><michael.fischer@yale.edu></a> |
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330 | | Professor of Computer Science |
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331 | ===============================================
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332 | </pre>
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333 | </body>
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334 | </html>
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335 |
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336 | --------------88r39cPU0W00kc0b7dxFagps--
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