CVE-2021-22924 : Exploit Details and Defense Strategies
Learn about CVE-2021-22924 affecting libcurl 7.10.4 to 7.77.0. Discover the impact, technical details, and mitigation strategies for this improper input validation vulnerability.
libcurl 7.10.4 to 7.77.0 keeps previously used connections in a pool for reuse. Error in configuration matching logic could lead to reusing wrong connections, affecting systems due to insensitive path comparison.
Understanding CVE-2021-22924
This CVE details an improper input validation vulnerability (CWE-20) in libcurl versions 7.10.4 to 7.77.0, impacting network security.
What is CVE-2021-22924?
libcurl's connection pool feature could reuse incorrect connections due to errors in configuration matching logic, potentially leading to security risks in affected systems.
The Impact of CVE-2021-22924
The vulnerability allows for the reuse of wrong connections, compromising data integrity and potentially exposing sensitive information to unauthorized access.
Technical Details of CVE-2021-22924
The vulnerability arises from the improper comparison of file paths by libcurl, lacking consideration for case sensitivity, potentially affecting the verification of server certificates.
Vulnerability Description
Error in configuration matching logic allows the reuse of wrong connections, posing a security risk by mishandling file path comparisons.
Affected Systems and Versions
Systems running libcurl versions 7.10.4 to 7.77.0 are vulnerable to this issue, impacting network connections utilizing the library.
Exploitation Mechanism
Attackers could potentially exploit this vulnerability to intercept sensitive data being transferred over insecure connections, compromising the integrity of communications.
Mitigation and Prevention
To address CVE-2021-22924, immediate steps and long-term security practices are essential to safeguard systems.
Immediate Steps to Take
Update libcurl to the latest version to mitigate the risk of incorrect connection reuse and enhance network security.
Long-Term Security Practices
Regularly monitor for security updates and patches for libcurl and other critical components to prevent similar vulnerabilities from being exploited.
Patching and Updates
Stay informed about security advisories and promptly apply patches or updates released by the vendor to address known vulnerabilities.