Description
MediaWiki 1.3.8 and earlier, when used with Apache mod_mime, does not properly handle files with two file extensions, such as .php.rar, which allows remote attackers to upload and execute arbitrary code.
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 | mediawiki | 1.4.9 | — |
| Debian 13 | mediawiki | 1.4.9 | — |
| Debian 12 | mediawiki | 1.4.9 | — |
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
- MediaWiki 1.3.x - Arbitrary Script Upload EDB-24994 · webapps · Dec 16, 2004 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- http://wikipedia.sourceforge.net/
- 11985 vdb-entry
- 20041216 STG Security Advisory: [SSA-20041215-19] Vulnerability of uploading files with multiple extensions in MediaWiki mailing-list
- 13478 third-party-advisory