Microsoft » Windows 2000 : Security Vulnerabilities, CVEs, Published In 2006 (Denial of service) CVSS score >= 4

The Workstation service in Microsoft Windows 2000 SP4 and XP SP2 allows remote attackers to cause a denial of service (memory consumption) via a large maxlen value in an NetrWkstaUserEnum RPC request.

The RpcGetPrinterData function in the Print Spooler (spoolsv.exe) service in Microsoft Windows 2000 SP4 and earlier, and possibly Windows XP SP1 and earlier, allows remote attackers to cause a denial of service (memory consumption) via an RPC request that specifies a large 'offered' value (output buffer size), a variant of CVE-2005-3644.

Unspecified vulnerability in Windows 2000 Advanced Server SP4 running Active Directory allows remote attackers to cause a denial of service via unknown vectors, as demonstrated by a certain VulnDisco Pack module. NOTE: the provenance of this information is unknown; the details are obtained from third party information. As of 20061116, this disclosure has no actionable information. However, since the VulnDisco Pack author is a reliable researcher, the disclosure is being assigned a CVE identifier for tracking purposes.

The Graphics Rendering Engine in Microsoft Windows 2000 through 2000 SP4 and Windows XP through SP2 maps GDI Kernel structures on a global shared memory section that is mapped with read-only permissions, but can be remapped by other processes as read-write, which allows local users to cause a denial of service (memory corruption and crash) and gain privileges by modifying the kernel structures.

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."

The server driver (srv.sys) in Microsoft Windows NT 4.0, 2000, XP, and Server 2003 allows remote attackers to cause a denial of service (system crash) via an SMB_COM_TRANSACTION SMB message that contains a string without null character termination, which leads to a NULL dereference in the ExecuteTransaction function, possibly related to an "SMB PIPE," aka the "Mailslot DOS" vulnerability. NOTE: the name "Mailslot DOS" was derived from incomplete initial research; the vulnerability is not associated with a mailslot.

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.

Heap-based buffer overflow in URLMON.DLL in Microsoft Internet Explorer 6 SP1 on Windows 2000 and XP SP1, with versions the MS06-042 patch before 20060912, allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a long URL in a GZIP-encoded website that was the target of an HTTP redirect, due to an incomplete fix for CVE-2006-3869.

The Server Message Block (SMB) driver (MRXSMB.SYS) in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 and earlier allows local users to cause a denial of service (hang) by calling the MrxSmbCscIoctlCloseForCopyChunk with the file handle of the shadow device, which results in a deadlock, aka the "SMB Invalid Handle Vulnerability."

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.

The default configuration of the DNS Server service on Windows Server 2003 and Windows 2000, and the Microsoft DNS Server service on Windows NT 4.0, allows recursive queries and provides additional delegation information to arbitrary IP addresses, which allows remote attackers to cause a denial of service (traffic amplification) via DNS queries with spoofed source IP addresses.

Microsoft Windows Graphics Rendering Engine (GRE) allows remote attackers to corrupt memory and cause a denial of service (crash) via a WMF file containing (1) ExtCreateRegion or (2) ExtEscape function calls with arguments with inconsistent lengths.

An unspecified Microsoft WMF parsing application, as used in Internet Explorer 5.01 SP4 on Windows 2000 SP4, and 5.5 SP2 on Windows Millennium, and possibly other versions, allows attackers to cause a denial of service (crash) and possibly execute code via a crafted WMF file with a manipulated WMF header size, possibly involving an integer overflow, a different vulnerability than CVE-2005-4560, and aka "WMF Image Parsing Memory Corruption Vulnerability."