Microsoft Windows

Land IP denial of service.

The DHCP Server service for Microsoft Windows NT 4.0 Server and Terminal Server Edition, with DHCP logging enabled, does not properly validate the length of certain messages, which allows remote attackers to cause a denial of service (application crash) via a malformed DHCP message, aka "Logging Vulnerability."

In IIS, remote attackers can obtain source code for ASP files by appending "::$DATA" to the URL.

The Windows Animated Cursor (ANI) capability in Windows NT, Windows 2000 through SP4, Windows XP through SP1, and Windows 2003 allow remote attackers to cause a denial of service via (1) the frame number set to zero, which causes an invalid memory address to be used and leads to a kernel crash, or (2) the rate number set to zero, which leads to resource exhaustion and hang.

Windows NT allows remote attackers to list all users in a domain by obtaining the domain SID with the LsaQueryInformationPolicy policy function via a null session and using the SID to list the users.

Various TCP/IP stacks and network applications allow remote attackers to cause a denial of service by flooding a target host with TCP connection attempts and completing the TCP/IP handshake without maintaining the connection state on the attacker host, aka the "NAPTHA" class of vulnerabilities. NOTE: this candidate may change significantly as the security community discusses the technical nature of NAPTHA and learns more about the affected applications. This candidate is at a higher level of abstraction than is typical for CVE.

Buffer overflow in the COM Internet Services and in the RPC over HTTP Proxy components for Microsoft Windows NT Server 4.0, NT 4.0 Terminal Server Edition, 2000, XP, and Server 2003 allows remote attackers to cause a denial of service via a crafted request.

The RPC component in Windows 2000, Windows NT 4.0, and Windows XP allows remote attackers to cause a denial of service (disabled RPC service) via a malformed packet to the RPC Endpoint Mapper at TCP port 135, which triggers a null pointer dereference.

Teardrop IP denial of service.

The logging capability for unicast and multicast transmissions in the ISAPI extension for Microsoft Windows Media Services in Microsoft Windows NT 4.0 and 2000, nsiislog.dll, allows remote attackers to cause a denial of service in Internet Information Server (IIS) and execute arbitrary code via a certain network request.

The NetBIOS Name Server (NBNS) protocol does not perform authentication, which allows remote attackers to cause a denial of service by sending a spoofed Name Conflict or Name Release datagram, aka the "NetBIOS Name Server Protocol Spoofing" vulnerability.

The TCP/IP stack in multiple operating systems allows remote attackers to cause a denial of service (CPU consumption) via a TCP packet with the correct sequence number but the wrong Acknowledgement number, which generates a large number of "keep alive" packets. NOTE: some followups indicate that this issue could not be replicated.

Terminal Server in Windows NT and Windows 2000 allows remote attackers to cause a denial of service via a sequence of invalid Remote Desktop Protocol (RDP) packets.

Predictable TCP sequence numbers allow spoofing.

Microsoft Distributed Transaction Coordinator (MSDTC) for Windows NT 4.0, 2000 SP4, XP SP1 and SP2, and Server 2003 allows remote attackers to cause a denial of service (crash) via a BuildContextW request with a large (1) UuidString or (2) GuidIn of a certain length, which causes an out-of-range memory access, aka the MSDTC Denial of Service Vulnerability. NOTE: this is a variant of CVE-2005-2119.

Microsoft Windows 2000 allows remote attackers to cause a denial of service (memory consumption) by sending a flood of empty TCP/IP packets with the ACK and FIN bits set to the NetBIOS port (TCP/139), as demonstrated by stream3.

The NetBT Name Service (NBNS) for NetBIOS in Windows NT 4.0, 2000, XP, and Server 2003 may include random memory in a response to a NBNS query, which could allow remote attackers to obtain sensitive information.

Windows NT 4.0 generates predictable random TCP initial sequence numbers (ISN), which allows remote attackers to perform spoofing and session hijacking.

Windows NT Service Control Manager (SCM) allows remote attackers to cause a denial of service via a malformed argument in a resource enumeration request.

RPC endpoint mapper in Windows NT 4.0 allows remote attackers to cause a denial of service (loss of RPC services) via a malformed request.

Remote Data Protocol (RDP) version 5.0 in Microsoft Windows 2000 and RDP 5.1 in Windows XP does not encrypt the checksums of plaintext session data, which could allow a remote attacker to determine the contents of encrypted sessions via sniffing, aka "Weak Encryption in RDP Protocol."

Multiple TCP implementations could allow remote attackers to cause a denial of service (bandwidth and CPU exhaustion) by setting the maximum segment size (MSS) to a very small number and requesting large amounts of data, which generates more packets with less TCP-level data that amplify network traffic and consume more server CPU to process.

The Cenroll ActiveX control (xenroll.dll) for Terminal Server Editions of Windows NT 4.0 and Windows NT Server 4.0 before SP6 allows remote attackers to cause a denial of service (resource consumption) by creating a large number of arbitrary files on the target machine.

The WINS server in Microsoft Windows NT 4.0 before SP4 allows remote attackers to cause a denial of service (process termination) via invalid UDP frames to port 137 (NETBIOS Name Service), as demonstrated via a flood of random packets.

Windows NT 4.0 SP2 allows remote attackers to cause a denial of service (crash), possibly via malformed inputs or packets, such as those generated by a Linux smbmount command that was compiled on the Linux 2.0.29 kernel but executed on Linux 2.0.25.

Windows 95/NT out of band (OOB) data denial of service through NETBIOS port, aka WinNuke.

Buffer overflow in Microsoft Rich Text Format (RTF) reader allows attackers to cause a denial of service via a malformed control word.

Memory leak in Simple Network Management Protocol (SNMP) agent (snmp.exe) for Windows NT 4.0 before Service Pack 4 allows remote attackers to cause a denial of service (memory consumption) via a large number of SNMP packets with Object Identifiers (OIDs) that cannot be decoded.

IIS 4.0 allows local users to bypass the "User cannot change password" policy for Windows NT by directly calling .htr password changing programs in the /iisadmpwd directory, including (1) aexp2.htr, (2) aexp2b.htr, (3) aexp3.htr , or (4) aexp4.htr.

Integer underflow in winhlp32.exe in Windows NT, Windows 2000 through SP4, Windows XP through SP2, and Windows 2003 allows remote attackers to execute arbitrary code via a malformed .hlp file, which leads to a heap-based buffer overflow.

Windows NT 4.0 and Windows 2000 before URP1 for Windows 2000 SP4 does not properly prevent NULL sessions from accessing certain alternate named pipes, which allows remote attackers to (1) list Windows services via svcctl or (2) read eventlogs via eventlog.

CRLF injection vulnerability in the CGI implementation in Microsoft Internet Information Services (IIS) 4.x and 5.x on Windows NT and Windows 2000 allows remote attackers to modify arbitrary uppercase environment variables via a \n (newline) character in an HTTP header.

The Remote Registry server in Windows NT 4.0 allows local authenticated users to cause a denial of service via a malformed request, which causes the winlogon process to fail, aka the "Remote Registry Access Authentication" vulnerability.

Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.

Vulnerability in Microsoft Windows NT 4.0 allows remote attackers to cause a denial of service in IIS by sending it a series of malformed requests which cause INETINFO.EXE to fail, aka the "Invalid URL" vulnerability.

Windows NT 4.0 allows remote attackers to cause a denial of service via a malformed SMB logon request in which the actual data size does not match the specified size.

Windows NT 4.0 allows remote attackers to cause a denial of service (crash) via extra source routing data such as (1) a Routing Information Field (RIF) field with a hop count greater than 7, or (2) a list containing duplicate Token Ring IDs.

The CIFS Computer Browser service on Windows NT 4.0 allows a remote attacker to cause a denial of service by sending a large number of host announcement requests to the master browse tables, aka the "HostAnnouncement Flooding" or "HostAnnouncement Frame" vulnerability.

The CIFS Computer Browser service allows remote attackers to cause a denial of service by sending a ResetBrowser frame to the Master Browser, aka the "ResetBrowser Frame" vulnerability.

Memory leak in SNMP agent in Windows NT 4.0 before SP5 allows remote attackers to conduct a denial of service (memory exhaustion) via a large number of queries.