Description
The pf_test_rule function in OpenBSD Packet Filter (PF), as used in OpenBSD 4.2 through 4.5, NetBSD 5.0 before RC3, MirOS 10 and earlier, and MidnightBSD 0.3-current allows remote attackers to cause a denial of service (panic) via crafted IP packets that trigger a NULL pointer dereference during translation, related to an IPv4 packet with an ICMPv6 payload.
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 3
- Multiple Vendor - PF Null Pointer Dereference EDB-8581 · dos · Apr 30, 2009 · verified
- OpenBSD 4.5 - IP datagram Null Pointer Deref Denial of Service EDB-8430 · dos · Apr 14, 2009 · verified
- OpenBSD 4.5 - IP datagrams Remote Denial of Service EDB-8406 · dos · Apr 13, 2009 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 53608 vdb-entry
- [4.3] 013: RELIABILITY FIX: April 11, 2009 vendor-advisory
- NetBSD-SA2009-001 vendor-advisory
- 8406 exploit
- openbsd-packetfilter-dos(49837) vdb-entry
- http://www.helith.net/txt/multiple_vendor-PF_null_pointer_dereference.txt
- 20090413 OpenBSD 4.3 up to OpenBSD-current: PF null pointer dereference - remote DoS (kernel panic) mailing-list
- 8581 exploit
- [4.4] 013: RELIABILITY FIX: April 11, 2009 vendor-advisory
- ADV-2009-1015 vdb-entry
- [4.5] 002: RELIABILITY FIX: April 11, 2009 vendor-advisory