PF in certain OpenBSD versions, when stateful filtering is enabled, does not limit…
Priority LOW 36Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
PF in certain OpenBSD versions, when stateful filtering is enabled, does not limit packets for a session to the original interface, which allows remote attackers to bypass intended packet filters via spoofed packets to other interfaces.
Why it matters now
EPSS 0.01457 73rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.1:*:*:*:*:*:*:* | 3.1 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.2:*:*:*:*:*:*:* | 3.2 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.3:*:*:*:*:*:*:* | 3.3 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:* | 3.4 | Vulnerable | OpenBSD |
- cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·OpenBSD
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2004-1799
- 2026-10-03 Alias added: GHSA-mp36-76pc-pphx
References
More Openbsd vulnerabilities
- TI-2002-00376 Integer overflow in xdr_array function in RPC servers for operating systems that use… CVSS 3.1CRITICAL 9.8
- TI-2003-00437 Off-by-one error in the fb_realpath() function, as derived from the realpath function in… CVSS 3.1CRITICAL 9.8
- TI-2007-05153 Stack-based buffer overflow in the cons_options function in options.c in dhcpd in OpenBSD… CVSS 2.0HIGH 7.2
- TI-2001-00539 Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows… CVSS 2.0HIGH 10.0
- TI-2026-40218 sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication… CVSS 3.1HIGH 8.3
- TI-2004-00444 Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31… CVSS 2.0HIGH 10.0
Sources
- CVE-2004-1799 · CVE Program
- CVE-2004-1799 · NVD
- FIRST EPSS
- GHSA-mp36-76pc-pphx · GitHub Advisory Database · CC BY 4.0
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