Microsoft Windows 2000

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.

An Activation function in the RPCSS Service involved with DCOM activation for Microsoft Windows 2000, XP, and 2003 allows remote attackers to cause a denial of service (memory consumption) via an activation request with a large length field.

The MIDL_user_allocate function in the Microsoft Distributed Transaction Coordinator (MSDTC) proxy (MSDTCPRX.DLL) allocates a 4K page of memory regardless of the required size, which allows attackers to overwrite arbitrary memory locations using an incorrect size value that is provided to the NdrAllocate function, which writes management data to memory outside of the allocated buffer.

SMTP service in Microsoft Windows 2000, Windows XP Professional, and Exchange 2000 allows remote attackers to cause a denial of service via a command with a malformed data transfer (BDAT) request.

Unspecified vulnerability in the driver for the Client Service for NetWare (CSNW) in Microsoft Windows 2000 SP4, XP SP2, and Server 2003 up to SP1 allows remote attackers to cause a denial of service (hang and reboot) via has unknown attack vectors, aka "NetWare Driver Denial of Service Vulnerability."

Unknown vulnerability in the SmartHTML interpreter (shtml.dll) in Microsoft FrontPage Server Extensions 2000 and 2002, and Microsoft SharePoint Team Services 2002, allows remote attackers to cause a denial of service (response failure) via a certain request.

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.

Internet Explorer in Windows XP SP2, and other versions including 5.01 and 5.5, allows remote attackers to install arbitrary programs via a web page that uses certain styles and the AnchorClick behavior, popup windows, and drag-and-drop capabilities to drop the program in the local startup folder, as demonstrated by "wottapoop.html".

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.

Distributed Transaction Controller in Microsoft Windows allows remote servers to cause a denial of service (MSDTC service hang) via a crafted Transaction Internet Protocol (TIP) message that causes DTC to repeatedly connect to a target IP and port number after an error occurs, aka the "Distributed TIP Vulnerability."

Distributed Transaction Controller in Microsoft Windows allows remote servers to cause a denial of service (MSDTC service exception and exit) via an "unexpected protocol command during the reconnection request," which is not properly handled by the Transaction Internet Protocol (TIP) functionality.

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.

Unknown vulnerability in the Local Security Authority Subsystem Service (LSASS) in Windows 2000 domain controllers allows remote attackers to cause a denial of service via a crafted LDAP message.

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.

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.

Memory leak in the SNMP LAN Manager (LANMAN) MIB extension for Microsoft Windows 2000 before SP3, when the Print Spooler is not running, allows remote attackers to cause a denial of service (memory consumption) via a large number of GET or GETNEXT requests.

Windows 2000 allows remote attackers to cause a denial of service (CPU consumption) by flooding Internet Key Exchange (IKE) UDP port 500 with packets that contain a large number of dot characters.

The DHTML Edit Control (dhtmled.ocx) allows remote attackers to inject arbitrary web script into other domains by setting a name for a window, opening a child page whose target is the window with the given name, then injecting the script from the parent into the child using execScript, as demonstrated by "AbusiveParent" in Internet Explorer 6.0.2900.2180.

The MSDTC (Microsoft Distributed Transaction Service Coordinator) for Microsoft Windows 2000, Microsoft IIS 5.0 and SQL Server 6.5 through SQL 2000 0.0 allows remote attackers to cause a denial of service (crash or hang) via malformed (random) input.

IDirectPlay4 Application Programming Interface (API) of Microsoft DirectPlay 7.0a thru 9.0b, as used in Windows Server 2003 and earlier allows remote attackers to cause a denial of service (application crash) via a malformed packet.

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.

netman.dll in Microsoft Windows Connections Manager Library allows local users to cause a denial of service (Network Connections Service crash) via a large integer argument to a particular function, aka "Network Connection Manager Vulnerability."

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.

Microsoft Windows 2000, XP, and Server 2003 allows remote attackers to cause a denial of service (cpu consumption) via a PNG image with crafted (1) Width and (2) Height values in the IHDR block.

Microsoft Windows NT 4.0, Windows 2000, Windows XP, and Windows Small Business Server 2003 allow remote attackers to cause a denial of service (IP stack hang) via a continuous stream of packets on TCP port 135 that have incorrect TCP header checksums and random numbers in certain TCP header fields, as demonstrated by the Achilles Windows Attack Tool. NOTE: the researcher reports that the Microsoft Security Response Center has stated "Our investigation which has included code review, review of the TCPDump, and attempts on reproing the issue on multiple fresh installs of various Windows Operating Systems have all resulted in non confirmation.

Stack overflow in Microsoft Internet Explorer 6 on Windows 2000 allows remote attackers to cause a denial of service (application crash) by creating an NMSA.ASFSourceMediaDescription.1 ActiveX object with a long dispValue property.

Windows 2000 Telnet Server allows remote attackers to cause a denial of service by sending a continuous stream of binary zeros, which causes the server to crash.

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 SMTP component in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, and Server 2008 Gold, SP2, and R2, and Exchange Server 2000 SP3, does not properly allocate memory for SMTP command replies, which allows remote attackers to read fragments of e-mail messages by sending a series of invalid commands and then sending a STARTTLS command, aka "SMTP Memory Allocation Vulnerability."

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.

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.

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.

Windows 2000 domain controller in Windows 2000 Server, Advanced Server, or Datacenter Server allows remote attackers to cause a denial of service via a flood of malformed service requests.

Memory leak in Microsoft 2000 domain controller allows remote attackers to cause a denial of service by repeatedly connecting to the Kerberos service and then disconnecting without sending any data.

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.

Windows NT and Windows 2000 hosts allow a remote attacker to cause a denial of service via malformed DCE/RPC SMBwriteX requests that contain an invalid data length.