Description
Integer overflow in the 16 bit variable reference counter in PHP 4 allows context-dependent attackers to execute arbitrary code by overflowing this counter, which causes the same variable to be destroyed twice, a related issue to CVE-2007-1286.
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
- PHP 4 - Userland ZVAL Reference Counter Overflow (PoC) EDB-3394 · dos · Mar 1, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 25056 third-party-advisory
- 24606 third-party-advisory
- http://www.php-security.org/MOPB/MOPB-01-2007.html
- 32770 vdb-entry
- GLSA-200703-21 vendor-advisory
- SUSE-SA:2007:032 vendor-advisory
- 22765 vdb-entry