CVE-2021-31292

Publication date 26 July 2021

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

An integer overflow in CrwMap::encode0x1810 of Exiv2 0.27.3 allows attackers to trigger a heap-based buffer overflow and cause a denial of service (DOS) via crafted metadata.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
exiv2	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release

Notes

mdeslaur

This is the same commit that was used as part of the fix for CVE-2021-29458, so not-affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
exiv2	Upstream: https://github.com/Exiv2/exiv2/pull/1539/commits/9b7a19f957af53304655ed1efe32253a1b11a8d0

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H