CVE-2022-42969 is a medium-severity vulnerability affecting the pytest py library through version 1.11.0. This vulnerability allows remote attackers to conduct a Regular expression Denial of Service (ReDoS) attack via a Subversion repository with crafted info data. The root cause is due to mishandling of the InfoSvnCommand argument. However, it is important to note that this vulnerability has been disputed by multiple third parties, who argue that it is not reproducible and therefore not a valid vulnerability.
The CVSS score assigned to this vulnerability is 5.3, indicating a medium severity level. The attack vector is network-based, with low complexity and no privileges required for exploitation. The availability impact is rated as low, which means that while the attack can disrupt service, it may not completely take down the affected system. Organizations should prioritize addressing this vulnerability in their security posture.
Given the nature of this vulnerability and the potential for exploitation, organizations utilizing the pytest library should assess their risk and implement necessary mitigation strategies. The urgency for addressing this vulnerability is categorized as medium, suggesting that it should be scheduled for remediation in the normal patch cycle.
This vulnerability is classified under CWE-1333, related to improper handling of inputs leading to denial of service conditions. Organizations should remain vigilant and monitor for any related attacks or exploits as part of their ongoing security efforts.
Vulnerability Details
The py library through 1.11.0 for Python allows remote attackers to conduct a ReDoS attack via a Subversion repository with crafted info data, because the InfoSvnCommand argument is mishandled.
The CVSS score is 5.3, with a medium severity interpretation. The affected product is the 'py' library from pytest, and the issue was published on October 16, 2022.
Technical Analysis
The root cause of the vulnerability lies in the mishandling of the InfoSvnCommand argument, which can lead to a ReDoS condition. The attack vector is network-based, and the complexity is considered low. No privileges are required to exploit this vulnerability, and user interaction is not necessary. The confidentiality impact is rated as none, the integrity impact is also none, while the availability impact is low, indicating that the service may become unresponsive under certain conditions.
Risk & Impact Analysis
Risk to organizations includes potential service disruptions due to ReDoS attacks, which can affect application availability. The blast radius could vary depending on how the library is used within application architecture. The urgency assessment based on the CVSS score indicates that organizations should address this vulnerability in their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version of the py library is up to and including version 1.11.0. Organizations using this library should ensure they have updated to the latest patched version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching this vulnerability by upgrading to the latest version of the py library. In cases where immediate patching is not feasible, it is advisable to implement input validation and sanitization to mitigate potential ReDoS attacks. Continuous security testing can help identify similar vulnerabilities in the future. For more information on penetration testing, refer to the penetration testing services offered by AppSecure.
Detection Guidance
Organizations should monitor for unusual patterns of traffic to their applications, particularly those involving Subversion repositories. Logging indicators such as request patterns, response times, and error rates can help identify potential exploitation attempts. Behavioral anomalies should be investigated promptly to determine if they stem from this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-42969 suggests a need for heightened awareness regarding input handling in libraries. This vulnerability highlights the importance of regular security assessments and proactive vulnerability management in software development. Organizations should consider implementing a vulnerability management program to ensure ongoing protection against similar threats. Additionally, employing penetration testing methodologies can provide critical insights into the overall security posture of applications.
Furthermore, adopting best practices in API security and cloud security assessment can further enhance resilience against similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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