Apache Commons FileUpload, Apache Tomcat: FileUpload DoS with excessive parts

Vulnerability Description

Apache Commons FileUpload before 1.5 does not limit the number of request parts to be processed resulting in the possibility of an attacker triggering a DoS with a malicious upload or series of uploads. Note that, like all of the file upload limits, the new configuration option (FileUploadBase#setFileCountMax) is not enabled by default and must be explicitly configured.

References

• https://lists.apache.org/thread/4xl4l09mhwg4vgsk7dxqogcjrobrrdoy
• http://www.openwall.com/lists/oss-security/2023/05/22/1
• https://security.gentoo.org/glsa/202305-37
• https://www.debian.org/security/2023/dsa-5522
• https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html