Description
gfax 0.4.2 and probably other versions creates temporary files insecurely, which allows local users to execute arbitrary commands via unknown vectors.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.1 | gfax | 0.4.2-11sarge1 | DSA-1329-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- GFax 0.7.6 - Temporary Files Local Arbitrary Command Execution EDB-30280 · local · Jul 5, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-1329-1 gfax - insecure temporary files Debian Security (DSA / DLA) · Mar 9, 2026