CVE Catalog

CVE-2006-0905

High
Published: Translated: NVD NIST

Summary

A programming error in the fast_ipsec component in FreeBSD 4.8-RELEASE through 6.1-STABLE and NetBSD 2 through 3 improperly updates the sequence number associated with a Security Association. This allows remote attackers to capture IPSec packets and conduct replay attacks.

Risk Assessment

The organization is at risk of replay attacks, which could allow captured VPN sessions or other IPSec-protected connections to be replayed, compromising the integrity and confidentiality of transmitted data.

Recommendation

Immediately update FreeBSD and NetBSD systems to versions containing the fix for this vulnerability. If an update is not possible, consider temporarily disabling the fast_ipsec feature or applying additional replay attack protection mechanisms.

Related vulnerabilities

Original NVD description (English source)

A "programming error" in fast_ipsec in FreeBSD 4.8-RELEASE through 6.1-STABLE and NetBSD 2 through 3 does not properly update the sequence number associated with a Security Association, which allows packets to pass sequence number checks and allows remote attackers to capture IPSec packets and conduct replay attacks.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS