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Vulnerability record · CVE-2009-0687 · published 11 August 2009

CVE-2009-0687: Midnightbsd vulnerability

Midnightbsd · Midnightbsd

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.

7.8 CVSS 2.0 High EPSS 9.5% · top 4.7% CWE-399 · CWE-399
7.8CVSS 2.0 base score
9.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
24References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.3/common/013_pf.patch PatchVendor Advisory
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-001.txt.asc Vendor Advisory
http://www.helith.net/txt/multiple_vendor-PF_null_pointer_dereference.txt
http://www.openbsd.org/errata43.html#013_pf PatchVendor Advisory
http://www.openbsd.org/errata44.html#013_pf PatchVendor Advisory
http://www.openbsd.org/errata45.html#002_pf PatchVendor Advisory
http://www.osvdb.org/53608
http://www.securityfocus.com/archive/1/502634
http://www.vupen.com/english/advisories/2009/1015 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/49837
https://www.exploit-db.com/exploits/8406
https://www.exploit-db.com/exploits/8581
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.3/common/013_pf.patch PatchVendor Advisory
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-001.txt.asc Vendor Advisory
http://www.helith.net/txt/multiple_vendor-PF_null_pointer_dereference.txt
http://www.openbsd.org/errata43.html#013_pf PatchVendor Advisory
http://www.openbsd.org/errata44.html#013_pf PatchVendor Advisory
http://www.openbsd.org/errata45.html#002_pf PatchVendor Advisory
http://www.osvdb.org/53608
http://www.securityfocus.com/archive/1/502634
http://www.vupen.com/english/advisories/2009/1015 PatchVendor Advisory
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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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-0687), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.