Description
Peter's Math Anti-Spam Spinoff plugin for WordPress generates audio CAPTCHA clips by concatenating static audio files without any additional distortion, which allows remote attackers to bypass CAPTCHA protection by reading certain bytes from the generated clip.
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
- WordPress Plugin Peter's Math Anti-Spam 0.1.6 - Audio CAPTCHA Security Bypass EDB-31029 · webapps · Jan 15, 2008 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- mathantispam-captcha-security-bypass(39688) vdb-entry
- 27287 vdb-entry
- 20080115 Defeating audio captcha systems mailing-list
- http://docs.google.com/View?docid=df36cd52_19xzmkwqcg