Description
Some AIO operations in FreeBSD 4.4 may be delayed until after a call to execve, which could allow a local user to overwrite memory of the new process and gain privileges.
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
- FreeBSD 4.4 - AIO Library Cross Process Memory Write EDB-21176 · local · Dec 10, 2001 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- bsd-aio-overwrite-memory(7693) vdb-entry
- 20011210 AIO vulnerability mailing-list
- 3661 vdb-entry
- 2001 vdb-entry