dovecot: Multiple vulnerabilities

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1071
                          dovecot security update
                               1 April 2019

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

Product:           dovecot
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
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  

Reference:         ESB-2019.1045
                   ESB-2019.1038

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2019/03/msg00038.html

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Package        : dovecot
Version        : 1:2.2.13-12~deb8u6
CVE ID         : CVE-2019-7524

A security vulnerability was discovered in the Dovecot email server.
When reading FTS 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 plugins are affected.

For Debian 8 "Jessie", this problem has been fixed in version
1:2.2.13-12~deb8u6.

We recommend that you upgrade your dovecot packages.

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

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