CVE-2024-2398 Information

Description

When an application tells libcurl it wants to allow HTTP/2 server push and the amount of received headers for the push surpasses the maximum allowed limit (1000) libcurl aborts the server push. When aborting libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory. Further this error condition fails silently and is therefore not easily detected by an application.

Reference

cve@curl.se https://curl.se/docs/CVE-2024-2398.json https://curl.se/docs/CVE-2024-2398.html https://hackerone.com/reports/2402845 When an application tells libcurl it wants to allow HTTP/2 server push and the amount of received headers for the push surpasses the maximum allowed limit (1000) libcurl aborts the server push. When aborting libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory.

Further this error condition fails silently and is therefore not easily detected by an application.