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CVE-2021-4156

Published: 23 March 2022

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.

Priority

Low

Cvss 3 Severity Score

7.1

Score breakdown

Status

Package Release Status
libsndfile
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

hirsute Ignored
(end of life)
impish Ignored
(end of life)
jammy Needed

trusty Needed

upstream
Released (1.1.0)
xenial
Released (1.0.25-10ubuntu0.16.04.3+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
kinetic Ignored
(end of life, was needed)
mantic Not vulnerable
(1.2.0-1)
lunar Ignored
(end of life, was needed)
Patches:
upstream: https://github.com/libsndfile/libsndfile/commit/ced91d7b971be6173b604154c39279ce90ad87cc (1.1.0beta1)

Severity score breakdown

Parameter Value
Base score 7.1
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