ESB-2019.1038 - [UNIX/Linux][Debian] dovecot: Execute arbitrary code/commands - Existing account 2019-03-29

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1038
                          dovecot security update
                               29 March 2019

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

Product:           dovecot
Publisher:         Debian
Operating System:  Debian GNU/Linux 9
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Increased Privileges            -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-7524  

Original Bulletin: 
   http://www.debian.org/security/2019/dsa-4418

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

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Debian Security Advisory DSA-4418-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
March 28, 2019                        https://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : dovecot
CVE ID         : CVE-2019-7524

A vulnerability was discovered in the Dovecot email server. When reading
FTS or POP3-UIDL headers from the Dovecot index, the input buffer size
is not bounds-checked. An attacker with the ability to modify dovecot
indexes, can take advantage of this flaw for privilege escalation or the
execution of arbitrary code with the permissions of the dovecot user.
Only installations using the FTS or pop3 migration plugins are affected.

For the stable distribution (stretch), this problem has been fixed in
version 1:2.2.27-3+deb9u4.

We recommend that you upgrade your dovecot packages.

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

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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