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Fedora Update Notification
FEDORA-2020-d737c57172
2020-10-13 20:34:18.297189
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Name        : dovecot
Product     : Fedora 32
Version     : 2.3.11.3
Release     : 5.fc32
URL         : http://www.dovecot.org/
Summary     : Secure imap and pop3 server
Description :
Dovecot is an IMAP server for Linux/UNIX-like systems, written with security
primarily in mind.  It also contains a small POP3 server.  It supports mail
in either of maildir or mbox formats.

The SQL drivers and authentication plug-ins are in their subpackages.

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Update Information:

    CVE-2020-12100: Parsing mails with a large number of MIME parts could
have resulted in excessive CPU usage or a crash due to running out of
stack memory.     CVE-2020-12673: Dovecot's NTLM implementation does not
correctly check       message buffer size, which leads to reading past
allocation which can       lead to crash.     CVE-2020-10967: lmtp/submission:
Issuing the RCPT command with an       address that has the empty quoted string
as local-part causes the lmtp       service to crash.     CVE-2020-12674:
Dovecot's RPA mechanism implementation accepts       zero-length message,
 which
leads to assert-crash later on.
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ChangeLog:

* Wed Sep  2 2020 Michal Hlavinka <mhlavink@redhat.com> - 1:2.3.11.3-5
- fix gssapi issue
* Wed Aug 26 2020 Michal Hlavinka <mhlavink@redhat.com> - 1:2.3.11.3-4
- fix FTBFS on 32bit systems
* Mon Aug 17 2020 Jeff Law <law@redhat.com> - 1:2.3.11.3-2
- Disable LTO
* Sat Aug 15 2020 Michal Hlavinka <mhlavink@redhat.com> - 1:2.3.11.3-1
- CVE-2020-12100: Parsing mails with a large number of MIME parts could
  have resulted in excessive CPU usage or a crash due to running out of
  stack memory.
- CVE-2020-12673: Dovecot's NTLM implementation does not correctly check
  message buffer size, which leads to reading past allocation which can
  lead to crash.
- CVE-2020-10967: lmtp/submission: Issuing the RCPT command with an
  address that has the empty quoted string as local-part causes the lmtp
  service to crash.
- CVE-2020-12674: Dovecot's RPA mechanism implementation accepts
  zero-length message, which leads to assert-crash later on.
* Sat Aug  1 2020 Fedora Release Engineering <releng@fedoraproject.org> -
 1:2.3.10.1-3
- Second attempt - Rebuilt for
  https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
* Mon Jul 27 2020 Fedora Release Engineering <releng@fedoraproject.org> -
 1:2.3.10.1-2
- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
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References:

  [ 1 ] Bug #1868539 - CVE-2020-12100 dovecot: Resource exhaustion via deeply
 nested MIME parts [fedora-all]
        https://bugzilla.redhat.com/show_bug.cgi?id=1868539
  [ 2 ] Bug #1868540 - CVE-2020-12673 dovecot: Out of bound reads in dovecot
 NTLM implementation [fedora-all]
        https://bugzilla.redhat.com/show_bug.cgi?id=1868540
  [ 3 ] Bug #1868541 - CVE-2020-12674 dovecot: Crash due to assert in RPA
 implementation [fedora-all]
        https://bugzilla.redhat.com/show_bug.cgi?id=1868541
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-d737c57172' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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