Vulnerability in YouDataSum CPAS Audit Management System

[ Description ]Official description

YouDataSum CPAS Audit Management System V4 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files by manipulating the fileId parameter. Attackers can send GET requests to /cpasm4/plugInManController/downPlugs with ../ sequences in fileId to retrieve system files like /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-01-13.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/eeeeeeeeee-code/POC/blob/main/wpoc/%E5%8C%97%E4%BA%AC%E5%8F%8B%E6%95%B0%E8%8…
• github.com/gelusus/wxvl/blob/main/doc/2024-12/%E3%80%8C%E6%BC%8F%E6%B4%9E%E5%A4%8D%E7%8…
• github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/cpas-…
• www.vulncheck.com/advisories/youdatasum-cpas-audit-management-system-v4-path-traversal-…
• www.youdatasum.com