CVE-2020-12460

Publication date 27 July 2020

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
opendmarc	23.10 mantic	Not affected
	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Ignored end of life
	20.04 LTS focal	Fixed 1.3.2-7ubuntu0.1
	18.04 LTS bionic	Fixed 1.3.2-3ubuntu0.2
	16.04 LTS xenial	Fixed 1.3.1+dfsg-3ubuntu0.1~esm1
	14.04 LTS trusty	Not in release

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Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-6356-1
OpenDMARC vulnerabilities
11 September 2023