A logic error in the IP fragment cache functionality in pf in FreeBSD 5.3, 5.4, and 6.0…
Priority LOW 32Published · 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
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
A logic error in the IP fragment cache functionality in pf in FreeBSD 5.3, 5.4, and 6.0, and OpenBSD, when a 'scrub fragment crop' or 'scrub fragment drop-ovl' rule is being used, allows remote attackers to cause a denial of service (crash) via crafted packets that cause a packet fragment to be inserted twice.
Why it matters now
EPSS 0.06599 93rd 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 · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:5.3:*:*:*:*:*:*:* | 5.3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.3:release:*:*:*:*:*:* | 5.3 release | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.3:releng:*:*:*:*:*:* | 5.3 releng | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.3:stable:*:*:*:*:*:* | 5.3 stable | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.4:pre-release:*:*:*:*:*:* | 5.4 pre-release | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.4:release:*:*:*:*:*:* | 5.4 release | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.4:releng:*:*:*:*:*:* | 5.4 releng | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:6.0:release:*:*:*:*:*:* | 6.0 release | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:6.0:stable:*:*:*:*:*:* | 6.0 stable | Vulnerable | FreeBSD |
- cpe:2.3:o:freebsd:freebsd:5.3:*:*:*:*:*:*:* Versions 5.3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.3:release:*:*:*:*:*:* Versions 5.3 release Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.3:releng:*:*:*:*:*:* Versions 5.3 releng Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.3:stable:*:*:*:*:*:* Versions 5.3 stable Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.4:pre-release:*:*:*:*:*:* Versions 5.4 pre-release Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.4:release:*:*:*:*:*:* Versions 5.4 release Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.4:releng:*:*:*:*:*:* Versions 5.4 releng Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:6.0:release:*:*:*:*:*:* Versions 6.0 release Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:6.0:stable:*:*:*:*:*:* Versions 6.0 stable Vulnerable ·FreeBSD
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-0381
- 2026-10-03 Alias added: GHSA-4x4x-qj57-37wg
References
More Freebsd vulnerabilities
- TI-2011-04182 Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT… CVSS 2.0HIGH 10.0
- TI-2007-03684 Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows… CVSS 3.1CRITICAL 9.8
- TI-2002-00376 Integer overflow in xdr_array function in RPC servers for operating systems that use… CVSS 3.1CRITICAL 9.8
- TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
- 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-2003-00642 The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 10.0
Sources
- CVE-2006-0381 · CVE Program
- CVE-2006-0381 · NVD
- FIRST EPSS
- GHSA-4x4x-qj57-37wg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences