CVE-2009-0687

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 9.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-08-11 · updated 2026-06-16
Weakness: CWE-399

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.

Affected products

Midnightbsd: 0.3-current
Mirbsd Miros: through 10
Netbsd: 5.0
OpenBSD: 4.2, 4.3, 4.4, 4.5

References

http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-001.txt.asc
http://www.helith.net/txt/multiple_vendor-PF_null_pointer_dereference.txt
http://www.openbsd.org/errata43.html#013_pf
http://www.openbsd.org/errata44.html#013_pf
http://www.openbsd.org/errata45.html#002_pf
http://www.osvdb.org/53608
http://www.securityfocus.com/archive/1/502634
http://www.vupen.com/english/advisories/2009/1015
https://exchange.xforce.ibmcloud.com/vulnerabilities/49837
https://www.exploit-db.com/exploits/8406
https://www.exploit-db.com/exploits/8581

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