Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of an incorrect infinite timeout which allowed connections to remain open which should have been closed.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.0-M1 through 9.0.89.

Users are recommended to upgrade to version 11.0.0-M21, 10.1.25 or 9.0.90, which fixes the issue.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-34750
• https://lists.apache.org/thread/4kqf0bc9gxymjc2x7v3p7dvplnl77y8l
• apache/tomcat@2344a4c
• apache/tomcat@2afae30
• apache/tomcat@9fec9a8
• https://tomcat.apache.org/security-10.html
• https://tomcat.apache.org/security-11.html
• https://tomcat.apache.org/security-9.html