Description
OSSP mm library (libmm) before 1.2.0 allows the local Apache user to gain privileges via temporary files, possibly via a symbolic link attack.
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 14 | mm | 1.1.3-7 | — |
| Debian 13 | mm | 1.1.3-7 | — |
| Debian 12 | mm | 1.1.3-7 | — |
| Debian 3.0 | mm | 1.1.3-6.1 | DSA-137 |
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
- MM 1.0.x/1.1.x - Shared Memory Library Temporary File Privilege Escalation EDB-21667 · local · Jul 29, 2002 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-137 mm - insecure temporary files Debian Security (DSA / DLA) · Mar 9, 2026
References
- RHSA-2002:164 vendor-advisory
- RHSA-2002:156 vendor-advisory
- RHSA-2003:158 vendor-advisory
- RHSA-2002:154 vendor-advisory
- mm-tmpfile-symlink(9719) vdb-entry
- SuSE-SA:2002:028 vendor-advisory
- RHSA-2002:163 vendor-advisory
- DSA-137 vendor-advisory
- 5352 vdb-entry
- RHSA-2002:153 vendor-advisory
- MDKSA-2002:045 vendor-advisory
- HPSBTL0208-056 vendor-advisory