Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.1398
opendmarc security update
26 April 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: opendmarc
Publisher: Debian
Operating System: Debian GNU/Linux
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-12460
Original Bulletin:
http://www.debian.org/lts/security/2021/dla-2639
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running opendmarc check for an updated version of the software for
their operating system.
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Debian LTS Advisory DLA-2639-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Utkarsh Gupta
April 25, 2021 https://wiki.debian.org/LTS
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Package : opendmarc
Version : 1.3.2-2+deb9u3
CVE ID : CVE-2020-12460
Debian Bug : 966464
It was discovered that OpenDMARC, a milter implementation of DMARC,
has improper null termination in the function opendmarc_xml_parse that
can result in a one-byte heap overflow in opendmarc_xml when parsing a
specially crafted DMARC aggregate report. This can cause remote memory
corruption when a '\0' byte overwrites the heap metadata of the next
chunk and its PREV_INUSE flag.
For Debian 9 stretch, this problem has been fixed in version
1.3.2-2+deb9u3.
We recommend that you upgrade your opendmarc packages.
For the detailed security status of opendmarc please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/opendmarc
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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