Microsoft ISA Server Netbios bypass policy
| isa-netbios-bypass-policy (20843) |  High Risk |
Description:
Microsoft Internet Security and Acceleration (ISA) and Microsoft Small Business Server could allow a remote attacker to bypass policy restrictions, caused by a vulnerability in the Netbios (all) predefined packet filter implementation. A remote attacker could access services utilizing the Netbios protocol on the affected ISA Server.
Platforms Affected:
- Microsoft, ISA Server 2000 SP2
- Microsoft, Small Business Server 2000
- Microsoft, Small Business Server 2003 Premium
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS05-034. See References.
Consequences:
Bypass Security
References:
- Microsoft Security Bulletin MS05-034, Cumulative Security Update for ISA Server 2000 (899753) at http://www.microsoft.com/technet/security/bulletin/ms05-034.mspx.
- BID-13954: Microsoft ISA Server NetBIOS Predefined Filter Policy Bypass Vulnerability
- CVE-2005-1216: Microsoft ISA Server 2000 allows remote attackers to connect to services utilizing the NetBIOS protocol via a NetBIOS connection with an ISA Server that uses the NetBIOS (all) predefined packet filter.
- SA15693: Microsoft ISA Server Two Vulnerabilities
- SECTRACK ID: 1014193: Microsoft Internet Security and Acceleration Server Bugs Let Remote Users Poison the Cache and Establish NetBIOS Connections
- US-CERT VU#367077: Microsoft ISA Server 2000 vulnerable to privilege escalation via NETBIOS connection
Reported:
Jun 14, 2005
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