CVE-2021-30602 is a high-severity vulnerability affecting Google Chrome, specifically in the WebRTC component. This vulnerability allows attackers to exploit heap corruption by convincing users to visit a malicious website. With a CVSS score of 8.8, the risk to organizations includes potential data breaches and unauthorized access to sensitive information. Given its severity and the nature of the attack vector, organizations should prioritize patching immediately.
The vulnerability was first published on August 26, 2021, and has since been modified. The exploitation status indicates that no public exploit has been confirmed, but the lack of a known patch increases the urgency for organizations to address this issue in their priority patch cycle.
Organizations utilizing Google Chrome versions prior to 92.0.4515.159 are at risk. The attack complexity is low, requiring no privileges and necessitating user interaction. Therefore, it is critical for organizations to update their systems to avoid potential exploitation.
In light of these factors, organizations should not only patch immediately but also consider implementing additional security measures to safeguard against potential future exploits related to similar vulnerabilities.
Vulnerability Details
This vulnerability allows an attacker who convinces a user to visit a malicious website to potentially exploit heap corruption via a crafted HTML page. It is classified under CWE-416 (Use After Free). The affected versions include all Google Chrome versions prior to 92.0.4515.159. The CVSS score of 8.8 indicates a high severity level, emphasizing the need for immediate remediation.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of memory in the WebRTC component of Google Chrome. The attack vector is network-based, and the attack complexity is low, meaning that an attacker can exploit this vulnerability without requiring any special conditions. No privileges are needed, but user interaction is required to visit the malicious site.
The impacts of this vulnerability are significant, affecting confidentiality, integrity, and availability, all rated as high. Attackers leveraging this vulnerability could gain unauthorized access to sensitive information, potentially leading to data breaches.
Risk & Impact Analysis
Risk to organizations includes potential data breaches and unauthorized access to sensitive information. The high CVSS score signifies the urgency to address this vulnerability, especially given the complexity of the attack and the potential blast radius for organizations still using affected versions of Chrome.
Organizations should assess their exposure and prioritize patching immediately, ensuring that all systems are updated to the latest version of Google Chrome to mitigate these risks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Google Chrome prior to 92.0.4515.159 are affected. This includes instances running on Fedora versions 33, 34, and 35.
Mitigation & Remediation
Organizations should upgrade to the latest version of Google Chrome to mitigate the risk posed by this vulnerability. If immediate patching is not possible, consider employing network controls and monitoring to detect any malicious activity. For more comprehensive security, organizations can engage in penetration testing to identify and remediate any additional weaknesses.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual access patterns, specifically focusing on user interactions that lead to unexpected behaviors in the browser. Behavioral anomalies and network signatures indicating redirection to malicious sites are also crucial indicators.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-30602 lies in its representation of vulnerabilities in widely used software like Google Chrome. It highlights the importance of timely updates and the role of user awareness in preventing exploitation. Security teams should take this incident as a reminder to constantly evaluate their security posture and engage in proactive measures.
For continuous improvement, organizations can benefit from insights provided by penetration testing methodologies and understanding the latest vulnerability management programs to strengthen defenses against future threats.
Additionally, organizations should remain informed on security trends by reviewing resources like the Cloud Penetration Testing Guide to identify and mitigate cloud-related vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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