import mailman-2.1.29-12.module+el8.5.0+13211+e8845b76.1
This commit is contained in:
CentOS Sources
Stepan Oksanichenko
parent
ce82f86ea5
commit
e666bb0369
129
SOURCES/mailmain-CVE-2021-42096-2021-42097.patch
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129
SOURCES/mailmain-CVE-2021-42096-2021-42097.patch
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@ -0,0 +1,129 @@
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diff --git a/Mailman/CSRFcheck.py b/Mailman/CSRFcheck.py
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index a1e78d9..24e3e11 100644
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--- a/Mailman/CSRFcheck.py
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+++ b/Mailman/CSRFcheck.py
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@@ -18,11 +18,13 @@
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""" Cross-Site Request Forgery checker """
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import time
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+import urllib
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import marshal
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import binascii
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from Mailman import mm_cfg
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-from Mailman.Utils import sha_new
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+from Mailman.Logging.Syslog import syslog
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+from Mailman.Utils import UnobscureEmail, sha_new
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keydict = {
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'user': mm_cfg.AuthUser,
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@@ -37,6 +39,10 @@ keydict = {
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def csrf_token(mlist, contexts, user=None):
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""" create token by mailman cookie generation algorithm """
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+ if user:
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+ # Unmunge a munged email address.
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+ user = UnobscureEmail(urllib.unquote(user))
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+
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for context in contexts:
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key, secret = mlist.AuthContextInfo(context, user)
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if key:
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@@ -49,9 +55,8 @@ def csrf_token(mlist, contexts, user=None):
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token = binascii.hexlify(marshal.dumps((issued, keymac)))
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return token
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-def csrf_check(mlist, token):
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+def csrf_check(mlist, token, options_user=None):
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""" check token by mailman cookie validation algorithm """
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-
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try:
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issued, keymac = marshal.loads(binascii.unhexlify(token))
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key, received_mac = keymac.split(':', 1)
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@@ -62,6 +67,17 @@ def csrf_check(mlist, token):
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key, user = key.split('+', 1)
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else:
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user = None
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+ if user:
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+ # This is for CVE-2021-42097. The token is a user token because
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+ # of the fix for CVE-2021-42096 but it must match the user for
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+ # whom the options page is requested.
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+ raw_user = UnobscureEmail(urllib.unquote(user))
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+ if options_user and options_user != raw_user:
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+ syslog('mischief',
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+ 'Form for user %s submitted with CSRF token '
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+ 'issued for %s.',
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+ options_user, raw_user)
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+ return False
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context = keydict.get(key)
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key, secret = mlist.AuthContextInfo(context, user)
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assert key
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diff --git a/Mailman/Cgi/options.py b/Mailman/Cgi/options.py
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index 386b308..980fc09 100644
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--- a/Mailman/Cgi/options.py
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+++ b/Mailman/Cgi/options.py
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@@ -54,9 +54,6 @@ except NameError:
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True = 1
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False = 0
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-AUTH_CONTEXTS = (mm_cfg.AuthListAdmin, mm_cfg.AuthSiteAdmin,
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- mm_cfg.AuthListModerator, mm_cfg.AuthUser)
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-
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def main():
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global _
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@@ -124,15 +121,6 @@ def main():
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print doc.Format()
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return
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- if set(params) - set(safe_params):
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- csrf_checked = csrf_check(mlist, cgidata.getfirst('csrf_token'))
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- else:
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- csrf_checked = True
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- # if password is present, void cookie to force password authentication.
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- if cgidata.getfirst('password'):
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- os.environ['HTTP_COOKIE'] = ''
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- csrf_checked = True
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-
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# Set the language for the page. If we're coming from the listinfo cgi,
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# we might have a 'language' key in the cgi data. That was an explicit
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# preference to view the page in, so we should honor that here. If that's
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@@ -168,6 +156,16 @@ def main():
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user = user[-1]
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# Avoid cross-site scripting attacks
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+ if set(params) - set(safe_params):
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+ csrf_checked = csrf_check(mlist, cgidata.getfirst('csrf_token'),
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+ Utils.UnobscureEmail(urllib.unquote(user)))
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+ else:
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+ csrf_checked = True
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+ # if password is present, void cookie to force password authentication.
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+ if cgidata.getfirst('password'):
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+ os.environ['HTTP_COOKIE'] = ''
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+ csrf_checked = True
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+
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safeuser = Utils.websafe(user)
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try:
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Utils.ValidateEmail(user)
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@@ -867,8 +865,9 @@ def options_page(mlist, doc, user, cpuser, userlang, message=''):
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mlist.FormatButton('othersubs',
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_('List my other subscriptions')))
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replacements['<mm-form-start>'] = (
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+ # Always make the CSRF token for the user. CVE-2021-42096
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mlist.FormatFormStart('options', user, mlist=mlist,
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- contexts=AUTH_CONTEXTS, user=user))
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+ contexts=[mm_cfg.AuthUser], user=user))
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replacements['<mm-user>'] = user
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replacements['<mm-presentable-user>'] = presentable_user
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replacements['<mm-email-my-pw>'] = mlist.FormatButton(
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diff --git a/Mailman/SecurityManager.py b/Mailman/SecurityManager.py
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index 9b7f03f..e9e5ce5 100644
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--- a/Mailman/SecurityManager.py
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+++ b/Mailman/SecurityManager.py
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@@ -104,6 +104,7 @@ class SecurityManager:
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if user is None:
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# A bad system error
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raise TypeError, 'No user supplied for AuthUser context'
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+ user = Utils.UnobscureEmail(urllib.unquote(user))
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secret = self.getMemberPassword(user)
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userdata = urllib.quote(Utils.ObscureEmail(user), safe='')
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key += 'user+%s' % userdata
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@ -3,7 +3,7 @@
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Summary: Mailing list manager with built in Web access
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Name: mailman
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Version: 2.1.29
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Release: 12%{?dist}
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Release: 12%{?dist}.1
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Epoch: 3
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Group: Applications/Internet
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Source0: ftp://ftp.gnu.org/pub/gnu/mailman/mailman-%{version}.tgz
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@ -34,6 +34,7 @@ Patch26: mailman-bouncer_oom_crash.patch
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Patch27: mailman-2.1.29-login_content_injection.patch
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Patch28: mailman-2.1.29-options_content_njection.patch
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Patch29: mailman-2.1.29-cmd_reply_encoding.patch
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Patch30: mailmain-CVE-2021-42096-2021-42097.patch
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License: GPLv2+
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URL: http://www.list.org/
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@ -127,6 +128,7 @@ additional installation steps, these are described in:
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%patch27 -p0 -b .login_injection
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%patch28 -p0 -b .options_injection
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%patch29 -p0 -b .cmd_reply_encoding
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%patch30 -p1 -b .CVE-2021-42096-2021-42097
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#cp $RPM_SOURCE_DIR/mailman.INSTALL.REDHAT.in INSTALL.REDHAT.in
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cp %{SOURCE5} INSTALL.REDHAT.in
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@ -580,6 +582,11 @@ exit 0
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%dir %attr(775,root,%{mmgroup}) %{lockdir}
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%changelog
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* Tue Nov 09 2021 Martin Osvald <mosvald@redhat.com> - 3:2.1.29-12.1
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- Fix for CVE-2021-42096
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- Fix for CVE-2021-42097
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- Resolves: #2021139, #2020692
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* Mon Apr 12 2021 Tomas Korbar <tkorbar@redhat.com> - 3:2.1.29-12
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- Fix encoding handling of command replies
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- Resolves: rhzb#1907323
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