openSUSE Security Update: Recommended update for mailman
______________________________________________________________________________

Announcement ID:    openSUSE-SU-2020:1707-1
Rating:             moderate
References:         #1171363 #1173369 
Cross-References:   CVE-2020-12108 CVE-2020-12137 CVE-2020-15011
                   
Affected Products:
                    openSUSE Leap 15.2
______________________________________________________________________________

   An update that fixes three vulnerabilities is now available.

Description:


   This update for mailman to version 2.1.34 fixes the following issues:

    - The fix for lp#1859104 can result in ValueError being thrown
      on attempts to subscribe to a list. This is fixed and extended to apply
       REFUSE_SECOND_PENDING to unsubscription as well. (lp#1878458)
    - DMARC mitigation no longer misses if the domain name returned by DNS
      contains upper case. (lp#1881035)
    - A new WARN_MEMBER_OF_SUBSCRIBE setting can be set to No to prevent
      mailbombing of a member of a list with private rosters by repeated
      subscribe attempts. (lp#1883017)
    - Very long filenames for scrubbed attachments are now truncated.
      (lp#1884456)
    - A content injection vulnerability via the private login page has been
      fixed. CVE-2020-15011  (lp#1877379, bsc#1173369)
    - A content injection vulnerability via the options login page has been
      discovered and reported by Vishal Singh. CVE-2020-12108 (lp#1873722,
      bsc#1171363)
    - Bounce recognition for a non-compliant Yahoo format is added.
    - Archiving workaround for non-ascii in string.lowercase in some Python
      packages is added.
    - Thanks to Jim Popovitch, there is now a dmarc_moderation_addresses list
      setting that can be used to apply dmarc_moderation_action to mail From:
      addresses listed
      or matching listed regexps. This can be used to modify mail to
       addresses that don't accept external mail From: themselves.
    - There is a new MAX_LISTNAME_LENGTH setting. The fix for lp#1780874
      obtains a list of the names of all the all the lists in the
      installation in order to determine the maximum length of a legitimate
      list name. It does this on every web access and on sites with a very
      large number of lists, this can have performance implications. See the
      description in Defaults.py for more information.
    - Thanks to Ralf Jung there is now the ability to add text based captchas
      (aka textchas) to the listinfo subscribe form. See the documentation
      for the new CAPTCHA setting in Defaults.py for how to enable this. Also
      note that if you have custom listinfo.html templates, you will have to
      add a  tag to those templates to make this work. This
      feature can be used in combination with or instead of the Google
      reCAPTCHA feature added in 2.1.26.
    - Thanks to Ralf Hildebrandt the web admin Membership Management section
      now has a feature to sync the list's membership with a list of email
      addresses as with the bin/sync_members command.
    - There is a new drop_cc list attribute set from DEFAULT_DROP_CC. This
      controls the dropping of addresses from the Cc: header in delivered
      messages by the duplicate avoidance process. (lp#1845751)
    - There is a new REFUSE_SECOND_PENDING mm_cfg.py setting that will cause
      a second request to subscribe to a list when there is already a pending
      confirmation for that user. This can be set to Yes to prevent
      mailbombing of a third party by repeatedly posting the subscribe form.
      (lp#1859104)
    - Fixed the confirm CGI to catch a rare TypeError on simultaneous
      confirmations of the same token. (lp#1785854)
    - Scrubbed application/octet-stream MIME parts will now be given a .bin
      extension instead of .obj. CVE-2020-12137 (lp#1886117)
    - Added bounce recognition for a non-compliant opensmtpd DSN with Action:
      error. (lp#1805137)
    - Corrected and augmented some security log messages. (lp#1810098)
    - Implemented use of QRUNNER_SLEEP_TIME for bin/qrunner
      --runner=All. (lp#1818205)
    - Leading/trailing spaces in provided email addresses for login to
      private archives and the user options page are now ignored. (lp#1818872)
    - Fixed the spelling of the --no-restart option for mailmanctl.
    - Fixed an issue where certain combinations of charset and invalid
      characters in a list's description could produce a List-ID header
      without angle brackets. (lp#1831321)
    - With the Postfix MTA and virtual domains, mappings for the site list
      -bounces and -request addresses in each virtual domain are now added to
      data/virtual-mailman (-owner was done in 2.1.24). (lp#1831777)
    - The paths.py module now extends sys.path with the result of
      site.getsitepackages() if available. (lp#1838866)
    - A bug causing a UnicodeDecodeError in preparing to send the
      confirmation request message to a new subscriber has been fixed.
      (lp#1851442)
    - The SimpleMatch heuristic bounce recognizer has been improved to not
      return most invalid email addresses. (lp#1859011)


Patch Instructions:

   To install this openSUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - openSUSE Leap 15.2:

      zypper in -t patch openSUSE-2020-1707=1



Package List:

   - openSUSE Leap 15.2 (x86_64):

      mailman-2.1.34-lp152.7.3.1
      mailman-debuginfo-2.1.34-lp152.7.3.1
      mailman-debugsource-2.1.34-lp152.7.3.1


References:

   https://www.suse.com/security/cve/CVE-2020-12108.html
   https://www.suse.com/security/cve/CVE-2020-12137.html
   https://www.suse.com/security/cve/CVE-2020-15011.html
   https://bugzilla.suse.com/1171363
   https://bugzilla.suse.com/1173369

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