CVE-2024-21640 : What You Need to Know

This CVE-2024-21640 article provides insight into the details of a vulnerability identified as "OOB Access in CefVideoConsumerOSR::OnFrameCaptured" within the Chromium Embedded Framework (CEF). The vulnerability was assigned a CVSS base score of 5.4, indicating a medium severity level. The issue was addressed in commit 1f55d2e by the vendor chromiumembedded.

Understanding CVE-2024-21640

This section delves into the specifics of CVE-2024-21640, shedding light on the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2024-21640?

The CVE-2024-21640 pertains to an out-of-bounds read vulnerability within the CefVideoConsumerOSR::OnFrameCaptured function of the Chromium Embedded Framework. By not properly validating the

pixel_format

parameter, an attacker could exploit this flaw to read data outside the intended boundaries, potentially leading to sensitive information exposure.

The Impact of CVE-2024-21640

This vulnerability presents a medium severity risk, with a CVSS base score of 5.4. While the confidentiality, integrity, and privileges required for exploitation are considered low, the attack vector is through a network connection. If successfully exploited, it could result in unauthorized access to sensitive information or system disruption.

Technical Details of CVE-2024-21640

In this section, we explore the technical aspects of CVE-2024-21640, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from inadequate validation of the

pixel_format

parameter within the CefVideoConsumerOSR::OnFrameCaptured function, allowing for out-of-bounds read access beyond the designated memory boundaries.

Affected Systems and Versions

The affected system identified in this CVE is the chromiumembedded CEF framework, specifically versions prior to commit 1f55d2e. Systems utilizing these vulnerable versions may be at risk of exploitation.

Exploitation Mechanism

Exploiting this vulnerability requires an attacker to manipulate the

pixel_format

parameter to read data outside the expected memory limits. This could enable an unauthorized party to access sensitive information or disrupt system functionality.

Mitigation and Prevention

This section outlines essential steps to mitigate the risks associated with CVE-2024-21640, ensuring system security and resilience against potential threats.

Immediate Steps to Take

To address CVE-2024-21640, users should update their chromiumembedded CEF framework to the version containing commit 1f55d2e or later. Implementing this patch helps remediate the vulnerability and enhances system security.

Long-Term Security Practices

Incorporating secure coding practices, routine security assessments, and timely software updates are crucial for bolstering long-term security resilience. By fostering a proactive security approach, organizations can mitigate risks posed by potential vulnerabilities.

Patching and Updates

Regularly monitoring for security advisories from software vendors and promptly applying patches or updates is fundamental in safeguarding systems against known vulnerabilities. Maintaining an up-to-date software environment minimizes the exposure to potential threats, enhancing overall cybersecurity posture.