CVE-2021-37994 is a medium-severity vulnerability affecting Google Chrome versions prior to 95.0.4638.54. This vulnerability allows a remote attacker to bypass navigation restrictions through a crafted HTML page, posing a significant risk to users and organizations relying on this web browser. The CVSS score of 6.5 indicates that while the attack complexity is low, user interaction is required for successful exploitation.
The real-world risk context for this vulnerability is concerning, as attackers may leverage this issue to execute malicious actions within the browser environment. Organizations using affected versions of Google Chrome should prioritize patching immediately to mitigate the risks associated with this vulnerability.
As of the last update, there are no public exploits confirmed, and the vulnerability is not actively exploited according to KEV data. However, the potential for exploitation emphasizes the importance of timely remediation.
Organizations should address this vulnerability in their priority patch cycle to safeguard their environments against potential threats.
Vulnerability Details
The vulnerability is due to an inappropriate implementation in the iFrame Sandbox in Google Chrome, allowing a remote attacker to bypass navigation restrictions. The CVSS 3.1 score of 6.5 reflects a medium severity level, indicating that while the attack requires user interaction, the potential impact on the integrity of user data is high.
Affected products include Google Chrome and Debian Linux versions 10.0 and 11.0. The vulnerability was published on November 2, 2021. There are no specific CWE classifications associated with this vulnerability.
Technical Analysis
The root cause of CVE-2021-37994 is linked to the iFrame Sandbox implementation in Google Chrome. Attackers can exploit this vulnerability through a crafted HTML page, which requires user interaction to initiate the attack. The attack vector is network-based, with a low attack complexity and no privileges required for exploitation.
Since user interaction is required, the attack's effectiveness depends on convincing the user to interact with the malicious content. The impact on confidentiality is none, while the integrity impact is high, indicating that attackers can alter user data under certain circumstances. Availability impact is none.
Risk & Impact Analysis
Organizations deploying Google Chrome without the latest updates are at risk of exploitation due to CVE-2021-37994. The potential blast radius for this vulnerability is considerable, especially for users who frequently interact with untrusted content online.
Given the medium CVSS score and the required user interaction for exploitation, this vulnerability should be monitored closely. Organizations should prioritize patching immediately to ensure that their environments remain secure.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include Google Chrome prior to 95.0.4638.54 and Debian Linux versions 10.0 and 11.0. Organizations should ensure they upgrade to the latest versions to mitigate the risk associated with this vulnerability.
Mitigation & Remediation
Organizations should prioritize upgrading Google Chrome to version 95.0.4638.54 or later to mitigate this vulnerability. If immediate patching is not possible, implementing network controls to restrict access to untrusted content may help reduce exposure.
Regular monitoring and security testing can further assist in identifying any remnants of vulnerability post-patching. For further guidance, organizations may explore penetration testing services to validate the effectiveness of their remediation efforts.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor for unusual network activity, particularly related to user interactions with untrusted content. Log indicators that show access to potentially malicious HTML pages should also be analyzed for abnormal behavior.
AppSecure Threat Intelligence Insight
CVE-2021-37994 highlights the ongoing need for organizations to maintain vigilance against web vulnerabilities. This case underscores the importance of timely updates and the implementation of robust security measures to protect against potential web-based attacks.
The vulnerability serves as a reminder of the evolving threat landscape and the necessity for continuous security assessments. Organizations can benefit from adopting a vulnerability management program to proactively address such issues and enhance their overall security posture.
For organizations utilizing cloud services, insights from this vulnerability can also inform their approach to cloud security assessments to ensure their applications are secure against similar vulnerabilities.
In conclusion, the CVE-2021-37994 incident serves as a crucial learning opportunity for security teams, emphasizing the importance of an agile security framework that can adapt to emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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