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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.4746
                        cyrus-imapd security update
                             20 December 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           cyrus-imapd
Publisher:         Debian
Operating System:  Debian GNU/Linux 9
                   Debian GNU/Linux 10
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-19783  

Original Bulletin: 
   http://www.debian.org/security/2019/dsa-4590

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running cyrus-imapd check for an updated version of the software for
         their operating system.

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Debian Security Advisory DSA-4590-1                   security@debian.org
https://www.debian.org/security/                       Moritz Muehlenhoff
December 19, 2019                     https://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : cyrus-imapd
CVE ID         : CVE-2019-19783

It was discovered that the lmtpd component of the Cyrus IMAP server
created mailboxes with administrator privileges if the "fileinto" was
used, bypassing ACL checks.

For the oldstable distribution (stretch), this problem has been fixed
in version 2.5.10-3+deb9u2.

For the stable distribution (buster), this problem has been fixed in
version 3.0.8-6+deb10u3.

We recommend that you upgrade your cyrus-imapd packages.

For the detailed security status of cyrus-imapd please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/cyrus-imapd

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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===========================================================================
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