// For flags

CVE-2015-1674

Microsoft Windows CNG Information Disclosure Vulnerability

Severity Score

4.6
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
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."

El kernel en Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold y R2, y Windows RT Gold y 8.1 no valida correctamente una dirección no especificada, lo que permite a usuarios locales evadir el mecanismo de protección KASLR, y como consecuencia descubrir la dirección de la base cng.sys, a través de una aplicación manipulada, también conocido como 'vulnerabilidad de la evasión de la característica de seguridad del kernel de Windows.'

This vulnerability allows local attackers to disclose sensitive information on vulnerable installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the cng.sys driver. The issue lies in a series of IOCTLs that return pointers to functions within the driver. An attacker can leverage this together with another vulnerability to achieve code execution under the context of SYSTEM.

*Credits: lokihardt@ASRT
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2015-02-17 CVE Reserved
  • 2015-05-12 CVE Published
  • 2024-08-06 CVE Updated
  • 2024-08-06 First Exploit
  • 2024-12-23 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-254: 7PK - Security Features
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
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Windows 8
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--
Affected
Microsoft
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Windows 8.1
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--
Affected
Microsoft
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Windows Rt
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--
Affected
Microsoft
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Windows Rt 8.1
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--
Affected
Microsoft
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Windows Server 2012
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--
Affected
Microsoft
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Windows Server 2012
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r2
Search vendor "Microsoft" for product "Windows Server 2012" and version "r2"
-
Affected