In cifs-utils through 6.14, a stack-based buffer overflow when parsing the mount.cifs ip= command-line argument could lead to local attackers gaining root privileges. This vulnerability has a CVSS score of 7.8, categorizing it as high severity. Organizations using affected versions are at risk, and immediate action is necessary to prevent exploitation.
Risk to organizations includes unauthorized access to critical systems and potential data breaches. Given the ease of exploitation due to low attack complexity and the requirement for local privileges, organizations that have not yet mitigated this vulnerability should prioritize patching immediately.
Currently, there are no public exploits reported for this vulnerability, and it is not actively exploited in the wild. However, the potential for local privilege escalation presents a significant risk for systems running affected versions of cifs-utils.
Organizations should assess their environments for the presence of vulnerable versions and implement remediation measures as part of their security protocols.
Vulnerability Details
The vulnerability identified as CVE-2022-27239 pertains to a stack-based buffer overflow in cifs-utils, affecting versions up to 6.14. The vulnerability allows local attackers to escalate privileges to root by manipulating command-line arguments. The CVSS score of 7.8 indicates a high severity level due to the potential impact on confidentiality, integrity, and availability.
The vulnerability was published on April 27, 2022, and is categorized under CWE-787, indicating improper control of a resource through its lifetime. This mismanagement can lead to serious security implications if not addressed.
Technical Analysis
The root cause of CVE-2022-27239 lies in the improper handling of command-line parameters within the cifs-utils. It exploits a stack-based buffer overflow, allowing attackers to overwrite the stack and execute arbitrary code. The attack vector is local, requiring low complexity and low privileges, with no user interaction necessary. The impact on confidentiality, integrity, and availability is assessed as high, making this a critical issue for systems using vulnerable versions.
Risk & Impact Analysis
Organizations running affected versions of cifs-utils face considerable risks. The ability for local attackers to gain root privileges can lead to unauthorized access, data exfiltration, and system compromise. The potential blast radius is significant, especially for systems that handle sensitive information or are critical to operations. Given the high CVSS score, organizations should address this vulnerability in their immediate patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions of cifs-utils and associated components are affected by this vulnerability:
All versions of cifs-utils prior to 6.15 are vulnerable. Additionally, specific versions of Debian Linux (9.0, 10.0, 11.0), as well as various SUSE and Fedora components, are also affected.
Mitigation & Remediation
To mitigate this vulnerability, organizations should update cifs-utils to version 6.15 or later. If immediate patching is not possible, consider implementing workarounds such as restricting local access to systems running vulnerable versions. Regularly auditing and monitoring configurations can also help identify potential exploitation attempts.
For further guidance, organizations may refer to resources on penetration testing and application security assessments to validate fixes.
Detection Guidance
Monitor logs for unusual command-line arguments and access patterns that may indicate attempts to exploit this vulnerability. Look for anomalies in system behavior that could suggest unauthorized privilege escalation.
AppSecure Threat Intelligence Insight
CVE-2022-27239 exemplifies the critical importance of maintaining up-to-date systems and the need for proactive monitoring. Organizations must prioritize vulnerabilities based on their potential impact and exploitability. This incident underscores the necessity for regular security assessments and adherence to best practices in vulnerability management.
For more information on securing your systems, refer to our resources on vulnerability management programs and penetration testing methodologies to enhance your security posture.
Additionally, organizations should consult our guide on cloud penetration testing for further insights into securing cloud environments.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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