CVE-2021-4156

Publication date 23 March 2022

Last updated 10 December 2024

Ubuntu priority

Cvss 3 Severity Score

An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.

Why is this CVE low priority?

This only results in a DoS when reading a FLAC file

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libsndfile	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Not affected
	23.04 lunar	Ignored end of life, was needed
	22.10 kinetic	Ignored end of life, was needed
	22.04 LTS jammy	Vulnerable
	21.10 impish	Ignored end of life
	21.04 hirsute	Ignored end of life
	20.04 LTS focal	Vulnerable
	18.04 LTS bionic	Vulnerable
	16.04 LTS xenial	Fixed 1.0.25-10ubuntu0.16.04.3+esm2 Ubuntu Pro
	14.04 LTS trusty	Ignored end of ESM support, was needed

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Patch details

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

Package	Patch details
libsndfile	Upstream: ced91d7

Severity score breakdown

Parameter	Value
Base score	7.1 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	Low
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H