dovecot: Access Confidential Data -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0393
                   [DLA 1667-1] dovecot security update
                              8 February 2019

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

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

Product:           dovecot
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-3814  

Reference:         ESB-2019.0331
                   ESB-2019.0330

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2019/02/msg00012.html

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Package        : dovecot
Version        : 1:2.2.13-12~deb8u5
CVE ID         : CVE-2019-3814

It was discovered that there was a vulnerability in the dovecot
IMAP/POP3 server.

A flaw in the TLS username handling could lead to an attacker
logging in as anyone else in the system if both
auth_ssl_{require_client,username_from}_cert were enabled.

For Debian 8 "Jessie", this issue has been fixed in dovecot version
1:2.2.13-12~deb8u5.

We recommend that you upgrade your dovecot packages.

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
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Qld 4072

Internet Email: auscert@auscert.org.au
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