CVE-2009-0687 EXPLOIT
7.8
HIGH · CVSS 2.0 · EPSS 9.5% (pctl 95)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 7.8 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
| EPSS | 9.52% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-399 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2009-08-11 |
| Last modified | 2026-06-16 |
Affected (4)
| Vendor | Product |
|---|---|
| midnightbsd | midnightbsd |
| mirbsd | miros |
| netbsd | netbsd |
| openbsd | openbsd |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Multiple Vendor - PF Null Pointer Dereference | 2009-04-30 |
| exploit-db | OpenBSD 4.5 - IP datagram Null Pointer Deref Denial of Service | 2009-04-14 |
| exploit-db | OpenBSD 4.5 - IP datagrams Remote Denial of Service | 2009-04-13 |
References
- ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.3/common/013_pf.patch
- 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
- ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.3/common/013_pf.patch
- 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
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