CVE-2021-3246 Explained : Impact and Mitigation

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.

Understanding CVE-2021-3246

This section provides insight into the impact and technical details of CVE-2021-3246.

What is CVE-2021-3246?

CVE-2021-3246 is a heap buffer overflow vulnerability in the function msadpcm_decode_block of libsndfile 1.0.30 that enables threat actors to run malicious code by exploiting a specially crafted WAV file.

The Impact of CVE-2021-3246

The vulnerability allows remote attackers to execute arbitrary code, potentially compromising the affected system's integrity and confidentiality.

Technical Details of CVE-2021-3246

Let's delve into the specifics of the vulnerability.

Vulnerability Description

The vulnerability arises due to improper validation of user-supplied input in the msadpcm_decode_block function, leading to a heap buffer overflow.

Affected Systems and Versions

The issue impacts versions of libsndfile 1.0.30.

Exploitation Mechanism

By enticing a user to open a maliciously crafted WAV file, an attacker can trigger the heap buffer overflow and execute arbitrary code on the victim's system.

Mitigation and Prevention

Discover the measures to mitigate the risks posed by CVE-2021-3246.

Immediate Steps to Take

Update libsndfile to a non-vulnerable version.
Refrain from opening untrusted WAV files from unknown sources.

Long-Term Security Practices

Employ robust cybersecurity solutions such as antivirus programs.
Conduct regular security audits to detect and address vulnerabilities promptly.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by libsndfile to address CVE-2021-3246 before threat actors exploit the vulnerability.