Title: Microsoft Windows WINS Name Value Handling Remote Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
The Microsoft Windows Internet Name Service (WINS) allows the mapping of NetBIOS names to IP addresses and vice versa. WINS servers can allow users to browse for local resources on the network using computer names.
The WINS server contains a buffer-overflow vulnerability that can allow attackers to corrupt WINS process memory. The issue occurs because the software fails to perform sufficient boundary checks on computer 'name' data that is handled during a WINS transaction.
Presumably, when a superfluous computer 'name' value is transmitted to a vulnerable WINS server, the 'name' data will trigger memory corruption when it is copied into a fixed-size memory buffer. Since an attacker may control the contents of process memory, they may exploit this vulnerability to influence program execution flow.
Ultimately, a WINS client may exploit this issue remotely to execute arbitrary code with SYSTEM-level privileges on a target WINS server. The service may be exposed via TCP/UDP port 42 by default, but the vendor has stated that other attack vectors may exist (though none are known at this time).
Affected Products:
- Avaya DefinityOne Media Servers
- Avaya IP600 Media Servers
- Avaya S3400 Message Application Server
- Avaya S8100 Media Servers
- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Advanced Server SP1
- Microsoft Windows 2000 Advanced Server SP2
- Microsoft Windows 2000 Advanced Server SP3
- Microsoft Windows 2000 Advanced Server SP4
- Microsoft Windows 2000 Datacenter Server
- Microsoft Windows 2000 Datacenter Server SP1
- Microsoft Windows 2000 Datacenter Server SP2
- Microsoft Windows 2000 Datacenter Server SP3
- Microsoft Windows 2000 Datacenter Server SP4
- Microsoft Windows 2000 Server
- Microsoft Windows 2000 Server SP1
- Microsoft Windows 2000 Server SP2
- Microsoft Windows 2000 Server SP3
- Microsoft Windows 2000 Server SP4
- Microsoft Windows NT Enterprise Server 4.0
- Microsoft Windows NT Enterprise Server 4.0 SP1
- Microsoft Windows NT Enterprise Server 4.0 SP2
- Microsoft Windows NT Enterprise Server 4.0 SP3
- Microsoft Windows NT Enterprise Server 4.0 SP4
- Microsoft Windows NT Enterprise Server 4.0 SP5
- Microsoft Windows NT Enterprise Server 4.0 SP6
- Microsoft Windows NT Enterprise Server 4.0 SP6a
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Server 4.0 SP1
- Microsoft Windows NT Server 4.0 SP2
- Microsoft Windows NT Server 4.0 SP3
- Microsoft Windows NT Server 4.0 SP4
- Microsoft Windows NT Server 4.0 SP5
- Microsoft Windows NT Server 4.0 SP6
- Microsoft Windows NT Server 4.0 SP6a
- Microsoft Windows NT Terminal Server 4.0
- Microsoft Windows NT Terminal Server 4.0 SP1
- Microsoft Windows NT Terminal Server 4.0 SP2
- Microsoft Windows NT Terminal Server 4.0 SP3
- Microsoft Windows NT Terminal Server 4.0 SP4
- Microsoft Windows NT Terminal Server 4.0 SP5
- Microsoft Windows NT Terminal Server 4.0 SP6
- Microsoft Windows Server 2003 Datacenter Edition
- Microsoft Windows Server 2003 Datacenter Edition Itanium
- Microsoft Windows Server 2003 Datacenter Edition Itanium SP1 Beta 1
- Microsoft Windows Server 2003 Datacenter Edition SP1 Beta 1
- Microsoft Windows Server 2003 Enterprise Edition
- Microsoft Windows Server 2003 Enterprise Edition Itanium
- Microsoft Windows Server 2003 Enterprise Edition Itanium SP1 Beta 1
- Microsoft Windows Server 2003 Enterprise Edition SP1 Beta 1
- Microsoft Windows Server 2003 Standard Edition
- Microsoft Windows Server 2003 Standard Edition SP1 Beta 1
- Microsoft Windows Server 2003 Web Edition
- Microsoft Windows Server 2003 Web Edition SP1 Beta 1
References:
- CORE Security: Microsoft WINS Name Validation exploit
- Metasploit: Metasploit Framework Exploits
- Microsoft: Microsoft Security Bulletin MS04-045
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