CVE-2021-30657 is a medium-severity vulnerability affecting Apple macOS. This vulnerability allows a malicious application to bypass Gatekeeper checks, potentially leading to unauthorized access to system resources. The issue stems from a logic problem that has been addressed with improved state management. Apple has released fixes for this vulnerability in macOS Big Sur 11.3 and Security Update 2021-002 for Catalina. Given the potential for active exploitation, organizations should prioritize patching immediately.
The CVSS score for this vulnerability is 5.5, indicating a medium severity level. The attack vector is local, meaning that an attacker must have physical or local access to the system to exploit the vulnerability. The complexity of the attack is low, requiring no special privileges, but user interaction is necessary to trigger the exploit. The risk to organizations includes unauthorized modifications to the system, which could compromise the integrity of the affected systems.
Apple is aware of reports suggesting that this issue may have been actively exploited in the wild, further emphasizing the need for immediate remediation. Organizations using affected versions of macOS should ensure they are updated to the latest versions to mitigate the risk associated with this vulnerability.
The urgency for defenders is high, as the potential for exploitation poses a threat to system integrity. Organizations that have not yet applied the relevant updates should do so without delay to protect their assets and data.
Vulnerability Details
The vulnerability is described as a logic issue addressed with improved state management. It affects various versions of macOS, specifically versions prior to the patches provided by Apple. The CVSS score of 5.5 reflects the medium severity of this flaw, which has implications for system integrity due to its potential to allow unauthorized modifications.
Technical Analysis
The root cause of this vulnerability lies in a logic issue within the System Preferences of macOS. Attackers can leverage this flaw by executing a malicious application that bypasses Gatekeeper, Apple's security feature designed to ensure that only trusted software runs on macOS. The attack vector is local, requiring the attacker to have physical access to the machine. The attack complexity is characterized as low, and no special privileges are required to exploit the vulnerability. However, user interaction is necessary, as the user must initiate the execution of the malicious application.
Risk & Impact Analysis
Organizations using affected versions of macOS face significant risk if they fail to remediate this vulnerability. The ability for a malicious application to bypass Gatekeeper checks can lead to unauthorized changes to system integrity, potentially allowing attackers to install additional malware or exfiltrate sensitive data. The potential blast radius includes all users on affected systems, making it critical for organizations to address the vulnerabilities in their systems promptly.
With a CVSS score indicating medium severity, and the possibility of active exploitation, organizations should evaluate their patch management processes to ensure they can respond swiftly to vulnerabilities like CVE-2021-30657. A proactive approach to vulnerability management will help contain risks and protect organizational assets.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
Affected versions include macOS Big Sur prior to 11.3 and various updates for macOS Catalina. Specifically, all versions of macOS prior to the vendor patches are susceptible to this vulnerability. Organizations should verify their systems to ensure they are not operating on vulnerable versions.
Mitigation & Remediation
To mitigate the risk associated with this vulnerability, organizations should apply the latest security updates from Apple. Specifically, upgrading to macOS Big Sur 11.3 or applying Security Update 2021-002 for Catalina will address the issue. Organizations unable to apply the patches should consider implementing additional security measures, such as restricting application installations and monitoring for unusual behavior.
Continuous penetration testing can also help identify potential vulnerabilities in the environment and validate the effectiveness of remediation efforts.
Detection Guidance
To effectively monitor for exploitation attempts related to this vulnerability, organizations should watch for the following indicators: unexpected changes in system configurations, unauthorized application installations, and unusual user activity. Log files should be examined for any anomalies that could indicate attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2021-30657 highlights the ongoing need for robust security measures in software development and deployment. Organizations must remain vigilant and ensure that their software is regularly updated to mitigate such vulnerabilities. This incident serves as a reminder of the potential risks associated with system preferences and the importance of user education regarding application permissions.
A vulnerability management program is essential for ensuring that organizations can respond effectively to vulnerabilities like this one. Regular training and awareness programs can also help in reducing the risk of exploitation.
For further insights on vulnerabilities and strategies to counteract them, organizations can explore various resources, including those on penetration testing methodology and effective remediation strategies.
VAPT services can provide valuable assistance in identifying and mitigating vulnerabilities in your applications.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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