Bug 1861991 (CVE-2020-12460)

Summary:	CVE-2020-12460 OpenDMARC: improper null termination in function opendmarc_xml_parse leads to heap-buffer overflow
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	steve, tkorbar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2020-07-30 07:27:56 UTC	Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1861992, 1861993
Bug Blocks:

Description Dhananjay Arunesh 2020-07-30 05:46:36 UTC

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.

References:
https://github.com/trusteddomainproject/OpenDMARC/issues/64
https://sourceforge.net/projects/opendmarc/

Comment 1 Dhananjay Arunesh 2020-07-30 05:47:14 UTC

Created opendmarc tracking bugs for this issue:

Affects: epel-all [bug 1861993]
Affects: fedora-all [bug 1861992]

Comment 2 Product Security DevOps Team 2020-07-30 07:27:56 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.