CVE-2022-42966 is identified as a medium-severity vulnerability affecting the cleo package from Python Poetry. This vulnerability allows an attacker to trigger an exponential Regular Expression Denial of Service (ReDoS) by supplying arbitrary input to the Table.set_rows method. The ability to disrupt service availability underscores the importance of addressing this vulnerability promptly.
The CVSS base score is 5.9, indicating medium severity. The score reflects an attack vector of NETWORK and a high attack complexity, with no privileges required and no user interaction necessary. The availability impact is marked as high, which means the service may become unavailable under certain conditions.
Risk to organizations includes potential service downtime, which may affect applications relying on the cleo package. Organizations should prioritize patching this vulnerability to mitigate risks associated with denial of service.
Currently, no known exploits have been reported for this vulnerability. However, organizations should remain vigilant and apply the necessary updates to prevent potential exploitation.
Vulnerability Details
The official description of CVE-2022-42966 states that an exponential ReDoS can be triggered in the cleo package, which is used in Python applications. This vulnerability is classified under CWE-1333, indicating that it pertains to improper handling of regular expressions.
The CVSS score assigned by NVD is 7.5, while the score from JFrog is 5.9. The difference in scoring reflects varying perspectives on the vulnerability's impact and exploitability, but both indicate a significant availability risk.
Technical Analysis
The root cause of this vulnerability lies in the way the cleo package processes input to the Table.set_rows method. This method can be exploited by providing specially crafted input, leading to a situation where the service becomes unresponsive.
The attack vector is classified as NETWORK, suggesting that an attacker can exploit this vulnerability remotely. The attack complexity is rated as high, indicating that crafting a successful attack may require specific knowledge about the input structure.
No privileges are required to exploit this vulnerability, nor is user interaction needed, which further increases the risk. The attack primarily affects the availability of the service, as it can cause prolonged downtimes.
Risk & Impact Analysis
Real-world deployment risk for CVE-2022-42966 is concerning due to the potential for denial of service. Organizations that utilize the cleo package in production environments may find their applications vulnerable to service interruptions.
The blast radius of this vulnerability can be considerable, especially for services that rely heavily on the cleo package. If exploited, attackers may cause significant disruptions, affecting end-users and business operations.
Given the CVSS score and the potential for high availability impact, organizations should address this vulnerability in their priority patch cycle. The urgency for remediation is moderate, requiring timely action to mitigate risks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the cleo package prior to 2.0.0. Organizations using vulnerable versions should prioritize updating to the latest version to eliminate exposure to this risk.
Mitigation & Remediation
To remediate CVE-2022-42966, organizations should update their cleo package to the latest version that addresses this vulnerability. If immediate patching is not possible, consider implementing input validation to restrict the types of inputs accepted by the Table.set_rows method.
For organizations seeking guidance, penetration testing services can help identify vulnerabilities in their systems. Regular assessments are crucial for maintaining a secure environment. More information can be found through penetration testing services to validate security measures.
Detection Guidance
To detect potential exploitation of CVE-2022-42966, organizations should monitor logs for unusual patterns in service requests to the cleo package. Behavioral anomalies indicating service disruptions should also be closely observed.
AppSecure Threat Intelligence Insight
This vulnerability highlights the need for ongoing vigilance in application security. Regular updates to dependencies, such as the cleo package, are essential to mitigate risks associated with known vulnerabilities.
Organizations should adopt a proactive approach to security by engaging in regular threat assessments. To learn more about effective security practices, referencing guides on vulnerability management and penetration testing methodologies can provide additional insights.
Furthermore, leveraging services such as red teaming can enhance an organization’s security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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