2021-3246 | libsndfile WAV File msadpcm_decode_block heap-based overflow


CVSS Meta Temp Score

CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.

Current Exploit Price (≈)

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CTI Interest Score

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5.5 $0-$5k 0.42

A vulnerability, which was classified as critical, has been found in libsndfile 1.0.30 (Audio Processing Software). This issue affects the function msadpcm_decode_block of the component WAV File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-122. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A heap buffer overflow vulnerability in msadpcm_decode_block of libsndfile 1.0.30 allows attackers to execute arbitrary code via a crafted WAV file.

The weakness was released 07/21/2021. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2021-3246 since 01/22/2021. The exploitation is known to be easy. The attack needs to approached within the local network. The successful exploitation requires a simple authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/26/2021).

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

Type

Name

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

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

AV AC Au C I A
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Vector Complexity Authentication Confidentiality Integrity Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Memory corruption
CWE: CWE-122
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒


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Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

01/22/2021 CVE assigned
07/21/2021 +179 days Advisory disclosed
07/21/2021 +0 days VulDB entry created
07/26/2021 +5 days VulDB last updateAdvisory: github.com
Status: Confirmed

CVE: CVE-2021-3246 (🔒)

Created: 07/21/2021 11:47
Updated: 07/26/2021 03:28
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍

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