Vulnerability Name:

CCN-99639

Published:2015-01-01
Updated:2015-01-01
Summary:Microsoft Windows could allow a local attacker to gain elevated privileges on the system, caused by the failure to correctly check the impersonation token of the caller to determine if the user is an administrator by the AhcVerifyAdminContext function within ahcache.sys. An attacker could exploit this vulnerability to gain elevated privileges on the system.
CVSS v3 Severity:9.3 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
6.1 Medium (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:U/RC:UR)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Consequences:Gain Privileges
References:Source: CCN
Type: Microsoft Web site
Windows 8.1

Source: CCN
Type: BID-71857
Microsoft Windows 'AhcVerifyAdminContext' Function Local Privilege Escalation Vulnerability

Source: XF
Type: UNKNOWN
ms-win-ahcache-priv-esc(99639)

Source: CCN
Type: Packet Storm Security [01-01-2015]
Windows ahcache.sys/NtApphelpCacheControl Privilege Escalation

Source: EXPLOIT-DB
Type: EXPLOIT
Offensive Security Exploit Database [01-01-2015]

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:microsoft:windows_8.1:-:-:-:*:-:-:x32:*
  • OR cpe:/o:microsoft:windows_8.1:*:*:*:*:*:*:x64:*

  • * Denotes that component is vulnerable
    BACK
    microsoft windows 8.1 - -
    microsoft windows 8.1 *