Home/CVE/The pf_test_rule function in OpenBSD Packet Filter (PF), as used in OpenBSD 4.2 through 4.5, NetBSD 5.0 before RC3, MirO
CVE

CVE-2009-0687

The pf_test_rule function in OpenBSD Packet Filter (PF), as used in OpenBSD 4.2 through 4.5, NetBSD 5.0 before RC3, MirO

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.

HIGH · CVSS 7.8 EPSS 0.12891
Act now
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 6% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

4
midnightbsdall versions
mirbsd miros<= 10
netbsdall versions
openbsdall versions
⚠

Public Exploits & PoCs

5
dosMultiple Vendor - PF Null Pointer Dereferenceverified
dosOpenBSD 4.5 - IP datagram Null Pointer Deref Denial of Serviceverified
dosOpenBSD 4.5 - IP datagrams Remote Denial of Serviceverified
pocwww.exploit-db.com · 8406www.exploit-db.com
pocwww.exploit-db.com · 8581www.exploit-db.com
▣

Scoring & Timeline

7.8
HIGH · CVSS v2 (legacy) · cret@cert.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Published to NVD11 Aug 2009 · 10:30 AM
🔗

References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.3/common/013_pf.patchPatchVendor Advisory
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-001.txt.ascVendor Advisory
http://www.helith.net/txt/multiple_vendor-PF_null_pointer_dereference.txt
http://www.openbsd.org/errata43.html#013_pfPatchVendor Advisory
http://www.openbsd.org/errata44.html#013_pfPatchVendor Advisory
http://www.openbsd.org/errata45.html#002_pfPatchVendor Advisory
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