-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2020-1dee17d880 2020-05-24 03:27:16.087535 --------------------------------------------------------------------------------
Name : dovecot Product : Fedora 32 Version : 2.3.10.1 Release : 1.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.
-------------------------------------------------------------------------------- Update Information:
- CVE-2020-10957: lmtp/submission: A client can crash the server by sending a NOOP command with an invalid string parameter. This occurs particularly for a parameter that doesn't start with a double quote. This applies to all SMTP services, including submission-login, which makes it possible to crash the submission service without authentication. - CVE-2020-10958: lmtp/submission: Sending many invalid or unknown commands can cause the server to access freed memory, which can lead to a server crash. This happens when the server closes the connection with a "421 Too many invalid commands" error. The bad command limit depends on the service (lmtp or submission) and varies between 10 to 20 bad commands. - 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. ---- dovecot updated to 2.3.10 -------------------------------------------------------------------------------- ChangeLog:
* Mon May 18 2020 Michal Hlavinka mhlavink@redhat.com - 1:2.3.10.1-1 - dovecot updated to 2.3.10.1 - fixes CVE-2020-10967, CVE-2020-10958, CVE-2020-10957 * Tue Apr 21 2020 Michal Hlavinka mhlavink@redhat.com - 1:2.3.10-1 - dovecot updated to 2.3.10, pigeonhole updated to 0.5.10 -------------------------------------------------------------------------------- References:
[ 1 ] Bug #1834317 - CVE-2020-10957 dovecot: malformed NOOP commands leads to DoS https://bugzilla.redhat.com/show_bug.cgi?id=1834317 [ 2 ] Bug #1834323 - CVE-2020-10958 dovecot: command followed by sufficient number of newlines leads to use-after-free https://bugzilla.redhat.com/show_bug.cgi?id=1834323 [ 3 ] Bug #1834326 - CVE-2020-10967 dovecot: sending mail with empty quoted localpart leads to DoS https://bugzilla.redhat.com/show_bug.cgi?id=1834326 --------------------------------------------------------------------------------
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2020-1dee17d880' 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 --------------------------------------------------------------------------------