CVE-2021-4156
7.1CVSSHIGH
Description
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.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:LConfidentialityLow
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
and 9 more affected products View all →
Attack Graph
Products CVE Techniques Tactics
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Exploitability
2 exploit sources identified
Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.
View exploit details Official Patch Available
MITRE ATT&CK
1 technique Collection
References
https://bugzilla.redhat.com/show_bug.cgi?id=2027690
bugzilla.redhat.com
https://github.com/libsndfile/libsndfile/issues/731
github.com
https://github.com/libsndfile/libsndfile/pull/732/commits/4c30646abf7834e406f7e2429c70bc254e18beab
github.com
and 20 more references View all →
Timeline
Published
Mar 23, 2022
Last Updated
Dec 11, 2025
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