CVE-2021-0507 is a high-severity vulnerability in Google Android that allows for a possible out of bounds write due to a missing bounds check in the handle_rc_metamsg_cmd function of btif_rc.cc. This vulnerability could lead to remote code execution over Bluetooth without requiring additional execution privileges. Exploitation of this vulnerability does not necessitate user interaction, making it particularly dangerous. The CVSS score of 8.8 indicates a high risk, emphasizing the urgency for organizations to address this issue promptly.
Organizations should prioritize patching immediately. The vulnerability affects multiple Android versions, including Android 8.1, 9.0, 10.0, and 11.0. As this issue can lead to significant impacts on confidentiality, integrity, and availability, organizations must understand the potential risk to their systems and users.
Given the exploitability of this vulnerability, it is crucial for organizations to remain vigilant and update their systems as soon as patches are available. Continuous monitoring and proactive security measures should be implemented to detect any attempts to exploit such vulnerabilities.
This vulnerability highlights the importance of secure coding practices, particularly regarding bounds checking. It serves as a reminder for developers and security teams to regularly review code for potential vulnerabilities and to engage in thorough testing and validation before deployment.
Vulnerability Details
CVE-2021-0507, discovered in the Google Android platform, is classified under CWE-787, indicating a potential for out-of-bounds write vulnerabilities. The vulnerability was published on June 21, 2021, and affects Android versions 8.1, 9.0, 10.0, and 11.0. The CVSS 3.1 score of 8.8 reflects a high severity, with high confidentiality, integrity, and availability impacts.
Technical Analysis
The root cause of CVE-2021-0507 is a flaw in the bounds checking mechanism within the handle_rc_metamsg_cmd function of btif_rc.cc. This oversight allows for potential out-of-bounds memory writes, enabling attackers to execute arbitrary code remotely over Bluetooth. The attack vector is classified as adjacent network, with low attack complexity and requiring no privileges or user interaction.
With high impacts on confidentiality, integrity, and availability, successful exploitation could compromise sensitive data and disrupt services, potentially affecting numerous users of the Android platform.
Risk & Impact Analysis
Risk to organizations includes the potential for unauthorized remote code execution, leading to significant data breaches or service interruptions. The widespread use of affected Android versions increases the vulnerability's impact. Organizations must assess their exposure and implement risk mitigation strategies, prioritizing this vulnerability in their patch management and security protocols.
The urgency for remediation is categorized as high, given the CVSS score and potential exploitation. Organizations should incorporate this vulnerability into their risk assessments and ensure that their defenses are fortified against similar threats.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects the following Android versions: Android 8.1, Android 9.0, Android 10.0, and Android 11.0. Organizations should ensure that they are running the patched versions to mitigate this vulnerability.
Mitigation & Remediation
Organizations must apply the latest patches provided by Google for affected Android versions. For those unable to upgrade, implementing network controls and monitoring for unusual Bluetooth activity is advised. Configuration hardening should be performed to limit exposure to similar vulnerabilities, and regular security assessments should be conducted.
For further guidance on security testing, organizations can refer to our penetration testing services to identify weaknesses in their security posture.
Detection Guidance
Organizations should monitor logs for any abnormal Bluetooth connections and look for behavioral anomalies that indicate exploitation attempts. Network signatures should be established to detect unauthorized access attempts, and system changes should be closely monitored.
AppSecure Threat Intelligence Insight
This vulnerability underscores the ongoing risks associated with Bluetooth technologies in mobile devices. Security teams should remain vigilant against similar vulnerabilities and continuously update their defensive measures. Organizations are encouraged to review their security frameworks, integrating lessons from this incident into their security policies.
For more on security assessment best practices, refer to our vulnerability management program and our guide on penetration testing methodology for comprehensive security strategies.
Additionally, organizations should consider regular engagement in red teaming exercises to further assess their security posture against potential threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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