CVE-2021-30560 is a high-severity vulnerability affecting Google Chrome prior to version 91.0.4472.164. This vulnerability allows a remote attacker to potentially exploit heap corruption via a crafted HTML page, posing significant risks to users of the affected browser. With a CVSS score of 8.8, organizations using impacted versions should prioritize patching to mitigate the associated risks.
The urgency for defenders is clear as this vulnerability could lead to severe impacts. Attackers may leverage this flaw to gain unauthorized access or execute arbitrary code, which can compromise sensitive user data and system integrity. Organizations must assess their current browser versions and apply necessary updates promptly.
Given the potential for exploitation, organizations should remain vigilant regarding security updates and ensure that they are running the latest versions of Google Chrome. This proactive approach is crucial in protecting users from the threats posed by this vulnerability.
In summary, CVE-2021-30560 represents a significant risk to organizations using affected versions of Google Chrome. Timely patching is essential to mitigate the risks associated with this vulnerability.
Vulnerability Details
This vulnerability allows a remote attacker to exploit heap corruption via a crafted HTML page. The specific weakness is classified under CWE-416, which references use-after-free errors. The vulnerability affects versions of Google Chrome prior to 91.0.4472.164.
The vulnerability has a CVSS score of 8.8, indicating high severity. The attack vector is reported as network-based, allowing an attacker to exploit the vulnerability without requiring physical access to the targeted system. The complexity of the attack is low, meaning that minimal effort is needed to exploit the vulnerability, and no privileges are required for exploitation.
The vulnerability was disclosed on August 3, 2021, which underscores the importance of updating software regularly to mitigate newly discovered security risks.
Technical Analysis
The root cause of CVE-2021-30560 is a use-after-free error in the Blink XSLT component of Google Chrome. This flaw occurs when an application attempts to use memory that has already been freed, potentially leading to memory corruption.
The attack vector is network-based, meaning that an attacker can exploit this vulnerability over the internet. The complexity of the attack is low, and it requires user interaction, as the user must visit a maliciously crafted web page to trigger the vulnerability.
Privileged access is not required for exploitation, which increases the risk for end-users. The impact of a successful exploitation includes high confidentiality, integrity, and availability impacts, as attackers may execute arbitrary code.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized access and control over systems running vulnerable versions of Google Chrome. The blast radius could be significant, affecting not only individual users but also organizational networks if exploited in a broader attack.
Given the high CVSS score and the nature of the vulnerability, organizations should prioritize patching immediately. The low complexity and lack of required privileges for exploitation further emphasize the need for rapid response.
Organizations should also consider implementing additional security measures, such as monitoring network traffic for anomalous behavior that may indicate exploitation attempts.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions are affected by this vulnerability: Google Chrome prior to 91.0.4472.164, libxslt prior to 1.1.35, and various Debian Linux versions (10.0 and 11.0). The Splunk Universal Forwarder is also affected in specific version ranges.
Mitigation & Remediation
To mitigate the risks associated with CVE-2021-30560, organizations should update Google Chrome to version 91.0.4472.164 or later. It is also advisable to check for updates to all affected components, including libxslt and the Splunk Universal Forwarder.
Organizations may also consider implementing configuration hardening and network controls to limit exposure to potential exploitation of this vulnerability. Regular monitoring for anomalies can help detect any attempts to exploit this vulnerability.
For further guidance on securing applications and systems, organizations can explore our application security assessment.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts related to this vulnerability. Behavioral anomalies, such as unexpected crashes or memory access violations, may suggest that an attempt to exploit the vulnerability has occurred.
Network signatures related to the exploitation of similar vulnerabilities can also be useful for detection. Additionally, monitoring for any changes in system configurations or user access patterns may help identify potential compromises.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-30560 lies in its demonstration of how memory management vulnerabilities can be exploited by attackers to gain unauthorized access to systems. This incident highlights the need for organizations to maintain rigorous patch management processes and to be vigilant against new vulnerabilities that may arise in widely used software.
Security teams must learn from this incident and prioritize the identification of similar weaknesses in their applications and systems. Regular penetration testing and vulnerability assessments can reveal such vulnerabilities before they are exploited.
For more insights on vulnerability management, organizations can refer to our guide on vulnerability management programs and read about the best practices for penetration testing methodology to strengthen organizational defenses.
In conclusion, CVE-2021-30560 serves as a reminder of the importance of timely patching and proactive vulnerability management in maintaining the security of systems and applications.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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