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

                              ESB-2019.3394.2
                           exim4 security update
                             9 September 2019

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

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

Product:           exim4
Publisher:         Debian
Operating System:  Debian GNU/Linux 9
                   Debian GNU/Linux 10
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Root Compromise -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-15846  

Original Bulletin: 
   http://www.debian.org/security/2019/dsa-4517

Revision History:  September 9 2019: CVE-2019-15846 likely being exploited to 
                                     install Lilu ransomware on vulnerable 
                                     servers
                   September 9 2019: Initial Release

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Debian Security Advisory DSA-4517-1                   security@debian.org
https://www.debian.org/security/                       Moritz Muehlenhoff
September 06, 2019                    https://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : exim4
CVE ID         : CVE-2019-15846

"Zerons" and Qualys discovered that a buffer overflow triggerable in the
TLS negotiation code of the Exim mail transport agent could result in the
execution of arbitrary code with root privileges.

For the oldstable distribution (stretch), this problem has been fixed
in version 4.89-2+deb9u6.

For the stable distribution (buster), this problem has been fixed in
version 4.92-8+deb10u2.

We recommend that you upgrade your exim4 packages.

For the detailed security status of exim4 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/exim4

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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