libsndfile FLAC Codec out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in libsndfile. It has been declared as problematic. The affected element is an unknown function of the component FLAC Codec Handler. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2021-4156. No exploit is available.

Detailsinfo

A vulnerability was found in libsndfile (Audio Processing Software) (version now known). It has been rated as problematic. Affected by this issue is some unknown processing of the component FLAC Codec Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was published 03/24/2022. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2021-4156 since 12/22/2021. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 216423 (Ubuntu 14.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : libsndfile vulnerabilities (USN-7273-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (216423), EUVD (EUVD-2021-34024) and CERT Bund (WID-SEC-2022-0497). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Open Source libsndfile
  • Gentoo Linux

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 216423
Nessus Name: Ubuntu 14.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : libsndfile vulnerabilities (USN-7273-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/22/2021 🔍
03/24/2022 +92 days 🔍
03/24/2022 +0 days 🔍
12/11/2025 +1358 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Confirmed

CVE: CVE-2021-4156 (🔍)
GCVE (CVE): GCVE-0-2021-4156
GCVE (VulDB): GCVE-100-195740
EUVD: 🔍
CERT Bund: WID-SEC-2022-0497 - libsndfile: Schwachstelle ermöglicht Denial of Service

Entryinfo

Created: 03/24/2022 13:15
Updated: 12/11/2025 16:42
Changes: 03/24/2022 13:15 (36), 03/27/2022 07:17 (1), 03/27/2022 07:23 (1), 02/19/2025 01:32 (16), 12/11/2025 14:00 (7), 12/11/2025 15:56 (2), 12/11/2025 16:42 (19)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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