CVE-2021-21225 is a high-severity vulnerability in Google Chrome that allows for out of bounds memory access in the V8 engine. This issue affects versions of Google Chrome prior to 90.0.4430.85. The risk to organizations includes potential heap corruption, which could be exploited by remote attackers through crafted HTML pages. Given the nature of this vulnerability and its availability for exploitation, organizations should prioritize patching immediately.
The CVSS score for this vulnerability is 8.8, indicating a high severity level. This score reflects the potential impact on confidentiality, integrity, and availability, all rated as high. As this vulnerability has a low attack complexity, attackers may exploit it with relative ease, making swift remediation essential.
Currently, there are no known exploits or public proof of concepts available for CVE-2021-21225, but the risk remains significant due to the potential for remote exploitation. Organizations should take this into account when evaluating their security posture and response strategies.
In summary, the urgency for defenders is clear. Organizations must act swiftly to apply the necessary updates to their systems to mitigate this vulnerability and protect against potential attacks.
Vulnerability Details
The vulnerability described as CVE-2021-21225 allows for out of bounds memory access in the V8 engine of Google Chrome. This flaw can lead to heap corruption, exploited through specially crafted HTML pages. The CVSS score of 8.8 highlights its high severity. Google Chrome versions prior to 90.0.4430.85 are affected, with a disclosure date of April 26, 2021. The CWE classification for this vulnerability is CWE-787, indicating improper control of a resource through its lifetime.
Technical Analysis
The root cause of CVE-2021-21225 lies in the V8 engine's handling of memory access. Attackers may exploit this vulnerability via the network, with no privileges required, although user interaction is necessary. The attack complexity is low, making it feasible for attackers to execute. The potential impacts are significant, with confidentiality, integrity, and availability all rated as high based on the CVSS score.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2021-21225 is considerable. Organizations using affected versions of Google Chrome may face exploitation risks that compromise their systems' integrity and availability. The potential blast radius is vast, given that this vulnerability can be exploited remotely without requiring authentication. The urgency is underscored by its high CVSS score, with organizations needing to address this vulnerability as part of their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects Google Chrome versions prior to 90.0.4430.85, as well as various versions of Debian and Fedora Linux distributions. Specifically, the affected CPEs include:
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Mitigation & Remediation
Organizations should apply the latest updates to Google Chrome to address this vulnerability. If a patch is unavailable, consider implementing configuration hardening and network controls to limit exposure. For further assistance, organizations can utilize penetration testing services to assess their security posture.
Detection Guidance
To detect potential exploitation attempts related to CVE-2021-21225, organizations should monitor logs for unusual memory access patterns, behavioral anomalies when rendering HTML content, and network signatures indicative of exploitation. Additionally, system changes that deviate from baseline configurations should be tracked closely.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-21225 highlights the ongoing challenges organizations face in maintaining secure environments. This vulnerability represents a broader trend of browser-based vulnerabilities, which continue to be a common target for attackers. Security teams should take this opportunity to strengthen their defenses against similar vulnerabilities by implementing comprehensive security protocols and conducting regular assessments. For further insights on strengthening security measures, organizations can explore our vulnerability management program and consider engaging in penetration testing methodology to better prepare for future threats. Additionally, our API penetration testing guide offers recommendations on securing application interfaces.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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