Arch Linux Security Advisory ASA-202009-1
=========================================
Severity: Medium
Date : 2020-09-01
CVE-ID : CVE-2020-12460
Package : opendmarc
Type : denial of service
Remote : Yes
Link : https://security.archlinux.org/AVG-1208
Summary
=======
The package opendmarc before version 1.3.3-1 is vulnerable to denial of
service.
Resolution
==========
Upgrade to 1.3.3-1.
# pacman -Syu "opendmarc>=1.3.3-1"
The problem has been fixed upstream in version 1.3.3.
…
[View More]Workaround
==========
None.
Description
===========
OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 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.
Impact
======
A remote attacker might be able to cause a denial of service or
possibly execute arbitrary code.
References
==========
https://github.com/trusteddomainproject/OpenDMARC/issues/64https://security.archlinux.org/CVE-2020-12460
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