CVE-2021-0870 is a high-severity vulnerability affecting Google Android systems, specifically versions 8.1 through 11. This vulnerability allows for possible memory corruption due to a race condition in the RW_SetActivatedTagType function of the rw_main.cc file. With a CVSS score of 8.1, this vulnerability poses a significant risk to organizations as it could lead to remote code execution without requiring any additional execution privileges or user interaction.
The urgency for defenders to address this vulnerability cannot be overstated. Organizations using affected Android versions should prioritize patching immediately to prevent potential exploitation. The impact on confidentiality, integrity, and availability is rated high, indicating that successful exploitation could result in severe consequences for affected systems.
Currently, there are no known exploits in the wild, but the nature of this vulnerability means it could be attractive to attackers. Thus, proactive measures should be taken to secure systems from potential threats.
In summary, CVE-2021-0870 represents a critical risk for Google Android users. Organizations should act swiftly to implement patches and ensure that their systems are secured against this vulnerability.
Vulnerability Details
The official description of CVE-2021-0870 states: In RW_SetActivatedTagType of rw_main.cc, there is possible memory corruption due to a race condition. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation. This vulnerability affects Android versions 8.1, 9, 10, and 11.
The CVSS score of 8.1 categorizes this vulnerability as high severity. The attack vector is network-based, with a high attack complexity, meaning that it might require specific conditions to exploit effectively. Importantly, no privileges are required, and user interaction is not necessary, increasing the risk of exploitation.
The CWE classification for this vulnerability is CWE-362, which is indicative of a race condition. This highlights the importance of secure coding practices to prevent similar vulnerabilities from being introduced in the future.
Technical Analysis
The root cause of CVE-2021-0870 stems from a race condition in the RW_SetActivatedTagType function. This vulnerability allows attackers to manipulate memory allocation in a manner that may lead to corruption. The attack vector is primarily network-based, allowing remote attackers to exploit this vulnerability without physical access to the device.
Given that the attack complexity is rated as high, successful exploitation would require an attacker to be able to send specially crafted data to the vulnerable system. However, the lack of required privileges and user interaction means that once an attack vector is established, the risk of exploitation increases significantly.
In terms of impacts, the confidentiality, integrity, and availability of the system are all rated high, indicating that exploitation could lead to unauthorized access to sensitive data, manipulation of data integrity, and potential system outages.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2021-0870 is significant. Organizations using affected Android versions face potential exploitation that could compromise sensitive data and disrupt services. The blast radius is considerable, as the vulnerability impacts multiple Android versions, making a substantial number of devices potentially vulnerable.
Organizations should assess the urgency of addressing this vulnerability based on their environment. Given the high CVSS score, immediate action is recommended. Organizations should prioritize patching affected systems to mitigate the risk of exploitation.
In light of the current threat landscape, ensuring that systems are updated and patched can significantly reduce the risk of successful attacks. Organizations should also consider implementing additional security measures, such as monitoring and network segmentation, to further protect their environments.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions of Android are affected by CVE-2021-0870: Android 8.1, Android 9, Android 10, and Android 11. Organizations using these versions should ensure that they are updated to mitigate the risk of exploitation.
Mitigation & Remediation
Organizations should prioritize patching affected Android versions to remediate CVE-2021-0870. The official security bulletin from Google provides necessary patches for the affected systems. For more information on patching, refer to the Android security bulletin.
In addition to patching, organizations should consider implementing configuration hardening practices to reduce the attack surface. Network controls should also be established to monitor and limit access to sensitive systems.
For further insights on ensuring robust security practices, organizations can refer to comprehensive guides on penetration testing and ongoing security assessments.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts related to CVE-2021-0870. Key behavioral anomalies include unexpected crashes or performance degradation in Android applications. Additionally, network signatures that reflect unusual traffic patterns should be reviewed.
System changes that deviate from established baselines, especially in affected Android versions, should also be closely monitored to identify potential exploitation.
AppSecure Threat Intelligence Insight
CVE-2021-0870 highlights the ongoing challenges in securing mobile operating systems against complex vulnerabilities like race conditions. Organizations should be aware of the patterns that lead to such vulnerabilities and ensure their development teams are trained in secure coding practices.
The lack of active exploitation at this time provides a window of opportunity for organizations to address this vulnerability before it becomes a target. Continuous security assessments and proactive vulnerability management are essential strategies to mitigate the risk of similar vulnerabilities in the future.
For a deeper understanding of vulnerability management practices, organizations can explore resources on vulnerability management programs and effective penetration testing methodologies to enhance their security posture.
Lastly, it is essential to remain informed about emerging threats and trends in vulnerability exploitation by engaging with threat intelligence resources and communities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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