Protect yourself against future threats.
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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2018.0418
exim4 security update
12 February 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: exim4
Publisher: Debian
Operating System: Debian GNU/Linux 8
Debian GNU/Linux 9
Debian GNU/Linux 7
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-6789
Original Bulletin:
http://www.debian.org/security/2018/dsa-4110
https://lists.debian.org/debian-lts-announce/2018/02/msg00009.html
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running exim4 check for an updated version of the software for their
operating system.
This bulletin contains two (2) Debian security advisories.
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Debian Security Advisory DSA-4110-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
February 10, 2018 https://www.debian.org/security/faq
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Package : exim4
CVE ID : CVE-2018-6789
Debian Bug : 890000
Meh Chang discovered a buffer overflow flaw in a utility function used
in the SMTP listener of Exim, a mail transport agent. A remote attacker
can take advantage of this flaw to cause a denial of service, or
potentially the execution of arbitrary code via a specially crafted
message.
For the oldstable distribution (jessie), this problem has been fixed
in version 4.84.2-2+deb8u5.
For the stable distribution (stretch), this problem has been fixed in
version 4.89-2+deb9u3.
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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Hash: SHA512
Package : exim4
Version : 4.80-7+deb7u6
CVE ID : CVE-2018-6789
Debian Bug : 890000
Meh Chang discovered a buffer overflow flaw in a utility function used
in the SMTP listener of Exim, a mail transport agent. A remote attacker
can take advantage of this flaw to cause a denial of service, or
potentially the execution of arbitrary code via a specially crafted
message.
For Debian 7 "Wheezy", this problem has been fixed in version
4.80-7+deb7u6.
We recommend that you upgrade your exim4 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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