CVE-2021-45263 : Security Advisory and Response

A detailed description of CVE-2021-45263, including its impact, technical details, and mitigation steps.

Understanding CVE-2021-45263

What is CVE-2021-45263?

CVE-2021-45263 is an invalid free vulnerability in gpac 1.1.0 through the gf_svg_delete_attribute_value function. This vulnerability can lead to a segmentation fault and application crash.

The Impact of CVE-2021-45263

The vulnerability can be exploited to cause a denial of service by crashing the application, potentially leading to a system becoming unresponsive or unstable.

Technical Details of CVE-2021-45263

Vulnerability Description

The vulnerability exists in the specific function of the gpac software, allowing for improper memory handling and resulting in a segmentation fault.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: All versions of gpac 1.1.0 are affected.

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker sending a specially crafted request to the affected software, triggering the invalid free operation.

Mitigation and Prevention

Immediate Steps to Take

Users are advised to update gpac to the latest version to mitigate the vulnerability.
Restrict network access to the vulnerable services to limit exposure.

Long-Term Security Practices

Regularly monitor security mailing lists for updates on vulnerabilities and patches.
Implement secure coding practices to prevent memory-related vulnerabilities.

Patching and Updates

Apply patches provided by the software vendor promptly to address the vulnerability.