CVE-2021-30565 is a high-severity vulnerability found in Google Chrome, specifically affecting versions prior to 92.0.4515.107. This vulnerability allows an attacker to execute an out of bounds write in Tab Groups on Linux and ChromeOS. By convincing a user to install a malicious extension, the attacker can exploit this flaw through a specially crafted HTML page. The CVSS score for this vulnerability is 8.8, indicating a high severity level due to its potential impact on confidentiality, integrity, and availability.
This vulnerability's risk to organizations includes unauthorized access to sensitive data, which could lead to data breaches or system compromise. Given the ease of exploitation, organizations should prioritize patching immediately to protect their systems. While there is no known public exploit at this time, the potential for attackers to leverage this vulnerability remains a significant concern.
Google has already released patches to address this vulnerability. The urgency for defenders is high, and it is essential to ensure that all affected systems are updated to the latest version of Chrome. Users should regularly check for updates and apply them without delay.
In summary, CVE-2021-30565 represents a critical vulnerability in Google Chrome that poses a high risk to organizations. As attackers continuously seek to exploit such weaknesses, immediate action is necessary to mitigate the risks associated with this vulnerability.
Vulnerability Details
The official description of CVE-2021-30565 states that it involves an out of bounds write in Tab Groups in Google Chrome on Linux and ChromeOS prior to version 92.0.4515.107. This flaw can be exploited if a user is tricked into installing a malicious extension that uses crafted HTML to perform an out of bounds memory write.
The vulnerability is classified under CWE-787, indicating a potential for memory corruption. The attack vector is defined as NETWORK, with an attack complexity rated as LOW. No privileges are required to exploit this vulnerability, but user interaction is necessary for successful exploitation.
The CVSS score of 8.8 places this vulnerability in the high severity category, illustrating its significant potential impact on confidentiality, integrity, and availability of affected systems. Organizations using Google Chrome must be aware of the implications of this vulnerability and act promptly to remediate it.
Technical Analysis
The root cause of CVE-2021-30565 stems from a failure to properly validate input, leading to potential out of bounds writes in memory. This vulnerability can be exploited through a crafted HTML page, which, once accessed, allows an attacker to manipulate memory and potentially execute arbitrary code.
The attack vector is primarily network-based, requiring low complexity for execution. Attackers do not need any privileges to initiate the exploit, but user interaction is essential, as they must be persuaded to open a malicious link or install a harmful extension.
The impact of a successful exploit could include high confidentiality, integrity, and availability impacts, allowing attackers to potentially gain unauthorized access to sensitive information or disrupt services.
Risk & Impact Analysis
Organizations deploying Google Chrome should assess the real-world risk associated with CVE-2021-30565. The vulnerability poses a significant threat, particularly for environments where users are likely to install extensions or interact with untrusted content.
The blast radius for this vulnerability can extend across various systems using the affected versions of Chrome, particularly on Linux and ChromeOS, increasing the urgency for organizations to patch. The potential for data breaches and unauthorized access to sensitive information necessitates immediate action.
Given the CVSS score of 8.8, organizations should address this vulnerability as a priority in their patch cycle. The urgency for remediation is high, and implementing patches should be part of a broader strategy for managing risk in software deployments.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
CVE-2021-30565 affects all versions of Google Chrome prior to 92.0.4515.107. Specifically, it impacts Chrome on Linux and ChromeOS platforms. Additionally, it affects Fedora versions 33, 34, and 35. Organizations should ensure they are running the latest versions to mitigate this vulnerability.
Mitigation & Remediation
To remediate CVE-2021-30565, organizations must update Google Chrome to version 92.0.4515.107 or later. Regularly applying patches and updates is crucial in maintaining security. For organizations unable to immediately apply patches, consider implementing network controls to limit exposure to untrusted content and monitoring for any suspicious activity.
For additional security, organizations may benefit from conducting a thorough penetration testing engagement to identify potential vulnerabilities in their environment.
Detection Guidance
Organizations should monitor logs for unusual activity related to browser extensions. Behavioral anomalies, such as unexpected extension installations or modifications, may indicate exploitation attempts. Additionally, implementing network signatures to detect malicious traffic patterns can help in identifying potential exploitation attempts.
AppSecure Threat Intelligence Insight
CVE-2021-30565 highlights the ongoing need for organizations to remain vigilant against browser vulnerabilities. As attackers often exploit browser security flaws, it is essential to implement a robust security posture that includes regular updates and user training.
Security teams should consider adopting a proactive approach to vulnerability management, focusing on identifying and addressing weaknesses before they can be exploited. The importance of vulnerability management programs cannot be overstated in this context.
In conclusion, organizations must leverage effective security measures to protect against vulnerabilities like CVE-2021-30565. Continuous monitoring, regular updates, and user education are vital components of a successful security strategy. For guidance on best practices, organizations can refer to resources on penetration testing methodology and other relevant topics.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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