CVE-2021-45258 : Security Advisory and Response

A stack overflow vulnerability in gpac 1.1.0 via the gf_bifs_dec_proto_list function leads to a segmentation fault and application crash.

Understanding CVE-2021-45258

What is CVE-2021-45258?

This CVE identifies a stack overflow flaw in gpac 1.1.0 triggered by the gf_bifs_dec_proto_list function, resulting in an application crash.

The Impact of CVE-2021-45258

The vulnerability can be exploited to cause a denial of service (DoS) scenario, leading to service unavailability and potential system instability.

Technical Details of CVE-2021-45258

Vulnerability Description

The vulnerability in gpac 1.1.0, specifically within the gf_bifs_dec_proto_list function, allows for a stack overflow, resulting in a segmentation fault and subsequent application crash.

Affected Systems and Versions

Affected Version: gpac 1.1.0

Exploitation Mechanism

An attacker can exploit this vulnerability by crafting a malicious input that triggers an excessively deep recursive function call, causing the stack to overflow and crash the application.

Mitigation and Prevention

Immediate Steps to Take

Apply patches provided by the vendor to fix the stack overflow issue.
Regularly monitor security advisories for updates and apply patches promptly.

Long-Term Security Practices

Conduct regular security assessments and code reviews to detect and address vulnerabilities.
Implement secure coding practices and input validation to prevent stack overflow attacks.

Patching and Updates

Update gpac to a patched version, ensuring that the vulnerability is mitigated and system security is maintained.