CVE-2021-30632 is a high-severity vulnerability identified in the V8 engine of Google Chrome, specifically affecting versions prior to 93.0.4577.82. This vulnerability allows an out-of-bounds write, which could potentially lead to heap corruption when a user interacts with a carefully crafted HTML page. The vulnerability is classified as high severity due to the potential impact on confidentiality, integrity, and availability.
The CVSS score for this vulnerability is 8.8, indicating a high level of risk. The attack vector is network-based, requiring user interaction to exploit the vulnerability. Risk to organizations includes unauthorized access, data breaches, and service disruptions, making it critical for defenders to prioritize patching immediately.
As of the latest updates, this vulnerability is known to be actively exploited in the wild, heightening the urgency for organizations to address it. Failure to remediate could result in significant security incidents and reputational damage.
Organizations must ensure they are running the latest version of Google Chrome to mitigate this vulnerability. It is essential to implement a robust vulnerability management program to proactively identify and remediate similar vulnerabilities.
Vulnerability Details
The vulnerability description indicates an out-of-bounds write in V8, allowing remote attackers to exploit heap corruption through crafted HTML. This issue has been assigned the Common Weakness Enumeration (CWE) ID CWE-787, which pertains to out-of-bounds access. The vulnerability was first published on October 8, 2021, and characterized with a base CVSS score of 8.8, reflecting its serious nature.
Technical Analysis
The root cause of this vulnerability lies in the V8 engine's handling of memory allocations. Specifically, improper bounds checking can lead to memory corruption, which may allow attackers to execute arbitrary code or crash the browser. The attack vector is network-based, meaning that an attacker can exploit this vulnerability by tricking a user into visiting a malicious page. While no authentication is required, user interaction is necessary to trigger the vulnerability.
The attack complexity is low, making it easier for attackers to exploit this vulnerability. The impact on confidentiality, integrity, and availability is high, further emphasizing the need for immediate attention from organizations.
Risk & Impact Analysis
The real-world risk associated with CVE-2021-30632 is significant due to its potential for exploitation in various environments. Organizations using Google Chrome, as well as any applications leveraging the Chromium engine, are at risk. The blast radius of this vulnerability can extend to numerous users, potentially impacting sensitive information and organizational operations.
Given the CVSS score and its inclusion in the Known Exploited Vulnerabilities (KEV) catalog, organizations must act quickly to patch their systems. Delays in remediation can lead to severe repercussions, including unauthorized access and system compromises.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
This vulnerability affects all versions of Google Chrome prior to 93.0.4577.82, as well as specific versions of Fedora (33 and 35). Organizations are advised to upgrade to the latest version of Google Chrome to mitigate this risk.
Mitigation & Remediation
To remediate CVE-2021-30632, organizations should apply the latest patches provided by Google. The recommended action is to update Google Chrome to the latest version. For systems where immediate patching is not feasible, consider implementing additional layers of security such as web filters or application firewalls to reduce exposure.
For more information on effective security practices, organizations can refer to the penetration testing methodology to validate their defenses.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual behavior patterns associated with web browser activity. Indicators of compromise may include attempts to access malicious sites, unexpected crashes, or abnormal memory usage. Network signatures for detecting traffic to known malicious domains may also be valuable.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-30632 reflects ongoing challenges in browser security and the importance of timely updates. Security teams should note that such vulnerabilities often highlight broader trends in software development, particularly around memory management. As a strategic takeaway, organizations must remain vigilant and apply a proactive approach to vulnerability management.
For further insights on improving security practices, organizations can explore our resources on vulnerability management programs and the importance of penetration testing in identifying potential weaknesses.
Lastly, organizations should consider engaging in red teaming exercises to test their defenses against real-world scenarios.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)