Description
Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service (memory corruption and kernel panic) via a PT_LWPINFO ptrace command with a large negative data value that satisfies a signed maximum value check but is used in an unsigned copyout function call.
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 5.4/6.0 - 'ptrace PT_LWPINFO' Local Denial of Service EDB-2524 · dos · Oct 12, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 22367 third-party-advisory
- 20061010 FreeBSD ptrace PT_LWPINFO Denial of Service Vulnerability third-party-advisory
- 20440 vdb-entry
- freebsd-ptlwpinfo-ptrace-dos(29476) vdb-entry