CVE Catalog

CVE-2006-1651

High
Published: Translated: NVD NIST

Summary

Microsoft ISA Server 2004 allows remote attackers to bypass certain filtering rules for ICMP and TCP protocols by sending IPv6 packets. However, this issue has been disputed, noting that ISA Server 2004 does not support IPv6 filtering.

Risk Assessment

The risk involves potential bypass of network security filters, which could lead to unauthorized access or attacks using IPv6 traffic if the organization relies on ISA Server 2004 filtering rules.

Recommendation

It is recommended to verify ISA Server 2004 configuration and consider disabling or blocking IPv6 traffic on the network firewall if not required, and monitor for updates from Microsoft.

Related vulnerabilities

Original NVD description (English source)

Microsoft ISA Server 2004 allows remote attackers to bypass certain filtering rules, including ones for (1) ICMP and (2) TCP, via IPv6 packets. NOTE: An established researcher has disputed this issue, saying that "Neither ISA Server 2004 nor Windows 2003 Basic Firewall support IPv6 filtering ... This is different network protocol.

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