Description
PHP 3 and 4 do not properly cleanse user-injected format strings, which allows remote attackers to execute arbitrary commands by triggering error messages that are improperly written to the error logs.
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 2
- PHP 3.0.16/4.0.2 - Remote Format Overflow EDB-220 · remote · Dec 6, 2000 · verified
- PHP 3.0/4.0 - Error Logging Format String EDB-20286 · remote · Oct 12, 2000 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- RHSA-2000:095 vendor-advisory
- RHSA-2000:088 vendor-advisory
- A101200-1 vendor-advisory
- CSSA-2000-037.0 vendor-advisory
- MDKSA-2000:062 vendor-advisory
- php-logging-format-string(5359) vdb-entry
- 20001012 Conectiva Linux Security Announcement - mod_php3 mailing-list
- 1786 vdb-entry