CVE-2023-24756 Explained : Impact and Mitigation

This CVE record was published on March 1, 2023, and involves a vulnerability in libde265 v1.0.10 that could lead to a Denial of Service (DoS) attack. Attackers can exploit a NULL pointer dereference in the ff_hevc_put_unweighted_pred_8_sse function at sse-motion.cc to trigger the DoS using a specially crafted input file.

Understanding CVE-2023-24756

This section delves into the details of CVE-2023-24756, shedding light on the vulnerability's nature, impact, affected systems, and mitigation strategies.

What is CVE-2023-24756?

The vulnerability in libde265 v1.0.10 pertains to a NULL pointer dereference in the ff_hevc_put_unweighted_pred_8_sse function at sse-motion.cc. This flaw can be exploited by attackers to carry out a Denial of Service attack.

The Impact of CVE-2023-24756

The impact of CVE-2023-24756 is the potential for attackers to cause a Denial of Service (DoS) on systems running the affected version of libde265.

Technical Details of CVE-2023-24756

In this section, we will explore the technical aspects of CVE-2023-24756, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in libde265 v1.0.10 involves a NULL pointer dereference in the ff_hevc_put_unweighted_pred_8_sse function at sse-motion.cc, which can be leveraged by attackers for DoS attacks.

Affected Systems and Versions

The vulnerability affects libde265 v1.0.10. Other versions may also be vulnerable, but specific details are not provided.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious input file that triggers the NULL pointer dereference in the ff_hevc_put_unweighted_pred_8_sse function at sse-motion.cc.

Mitigation and Prevention

This section outlines steps to mitigate the impact of CVE-2023-24756 and prevent potential attacks.

Immediate Steps to Take

Users are advised to update to a patched version of libde265 that addresses the NULL pointer dereference vulnerability.
Exercise caution when handling untrusted input files to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update software and libraries to ensure that known vulnerabilities are patched promptly.
Implement secure coding practices to minimize the risk of introducing vulnerabilities in software applications.

Patching and Updates

Keep abreast of security advisories from vendors and communities to promptly apply patches for known vulnerabilities like the one found in libde265 v1.0.10.