CVE-2024-2398
CVE-2024-2398 is a memory leak vulnerability in libcurl that occurs when handling HTTP/2 server push. When the number of headers received during a server push exceeds the limit, libcurl aborts the push but fails to free all allocated memory, leading to a leak. This error happens silently, making it difficult for applications to detect. With an SVRS of 30, this vulnerability is considered low risk, but still requires monitoring. While the CVSS score is 0, the SVRS indicates some level of concern due to factors beyond the direct technical impact. The vulnerability can lead to resource exhaustion if exploited over time. It's crucial to monitor affected systems for potential exploitation and apply necessary patches when available to prevent service disruptions.
Description:
CVE-2024-2398 is a memory leak vulnerability in libcurl, a popular open-source library used for transferring data over the internet. When an application using libcurl enables HTTP/2 server push and receives more than 1000 headers, libcurl fails to free all allocated headers, resulting in a memory leak. This error goes undetected by the application.
Key Insights:
- SVRS Score: 30 indicates a moderate risk, requiring attention but not immediate action.
- Exploit Status: Active exploits have been published.
- CISA Warning: The Cybersecurity and Infrastructure Security Agency (CISA) has warned of the vulnerability, calling for immediate and necessary measures.
- In The Wild: The vulnerability is actively exploited by hackers.
Mitigation Strategies:
- Update libcurl to the latest version (7.87.0 or later).
- Limit the number of headers received for HTTP/2 server push to less than 1000.
- Monitor applications for unusual memory consumption or crashes.
- Implement a vulnerability management program to regularly scan for and patch vulnerabilities.
Additional Information:
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Indicators of Compromise
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Affected Software
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CWE Details
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