CVE-2022-42966 Explained : Impact and Mitigation
Learn about CVE-2022-42966, an exponential ReDoS vulnerability in the cleo package, enabling attackers to disrupt systems. Find mitigation and prevention strategies here.
An exponential ReDoS (Regular Expression Denial of Service) vulnerability has been identified in the cleo PyPI package. Attackers can exploit this vulnerability by supplying arbitrary input to the Table.set_rows method.
Understanding CVE-2022-42966
This CVE describes a denial-of-service vulnerability due to inefficient regular expression complexity in the cleo package.
What is CVE-2022-42966?
The CVE-2022-42966 vulnerability allows attackers to trigger an exponential ReDoS attack by manipulating the Table.set_rows method in the cleo PyPI package.
The Impact of CVE-2022-42966
Exploiting this vulnerability can lead to a denial of service, causing a significant impact on the availability of systems using the affected versions of the cleo package.
Technical Details of CVE-2022-42966
This section provides in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability arises from the inefficiency in handling regular expression complexity in the Table.set_rows method of the cleo PyPI package.
Affected Systems and Versions
The cleo package version 0 is affected by this vulnerability. All versions less than '*' are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by providing specially crafted input to the Table.set_rows method, triggering an exponential ReDoS attack.
Mitigation and Prevention
Take immediate steps to secure your systems from potential attacks and ensure long-term security practices.
Immediate Steps to Take
- Update to the latest version of the cleo package to mitigate the vulnerability.
- Implement input validation mechanisms to prevent arbitrary input manipulation.
Long-Term Security Practices
- Regularly monitor security advisories for the cleo package and apply patches promptly.
- Conduct security testing to identify and address vulnerabilities proactively.
Patching and Updates
Stay informed about security updates released by the cleo package maintainers and apply patches as soon as they are available.