CVE-2006-0381: n/a vulnerability

CVE-2006-0381: A logic error in the IP fragment cache functionality in pf in FreeBSD 5.3, 5.4, and 6.0, and OpenBSD, when...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 16:34 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2006-0381 is a denial-of-service flaw in pf packet filtering on older BSD systems. If specific IP fragment scrub rules are enabled, crafted network packets can crash the system. Business impact is mainly firewall or gateway outage, not confirmed data theft or remote code execution. Exposure is most likely on legacy BSD firewalls or routers using pf and the specified scrub fragment rules. Modern supported systems are unlikely to be affected, but historical appliances or unmanaged BSD hosts should be checked. Treat as a priority only where legacy BSD pf firewalls remain in production. The main risk is service outage at network boundaries. If no affected versions or rules exist, business urgency is low. Mitigation focus: Identify BSD systems running pf on affected legacy versions.; Check pf rules for 'scrub fragment crop' or 'scrub fragment drop-ovl'.; Review FreeBSD, OpenBSD, or NetBSD vendor advisories for corrected versions or patches..

Prepared: Jul 11, 2026, 15:21 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 25, 2006, 22:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
bsd-pf-fragment-dos(24337)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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