| Name | CVE-2025-23016 |
| Description | FastCGI fcgi2 (aka fcgi) 2.x through 2.4.4 has an integer overflow (and resultant heap-based buffer overflow) via crafted nameLen or valueLen values in data to the IPC socket. This occurs in ReadParams in fcgiapp.c. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4329-1 |
| Debian Bugs | 1092774 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libfcgi (PTS) | bullseye | 2.4.2-2 | vulnerable |
| bullseye (security) | 2.4.2-2+deb11u1 | fixed |
| bookworm | 2.4.2-2+deb12u1 | fixed |
| forky, sid, trixie | 2.4.5-0.1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/FastCGI-Archives/fcgi2/issues/67
https://github.com/FastCGI-Archives/fcgi2/pull/74
Fixed by: https://github.com/FastCGI-Archives/fcgi2/commit/b0eabcaf4d4f371514891a52115c746815c2ff15 (2.4.5)