Vulnerability Name:

CCN-233704

Published:2022-08-16
Updated:2022-08-16
Summary:Microsoft Windows is vulnerable to a denial of service, caused by a NULL pointer dereference flaw in the DirectComposition::CApplicationChannel::GetWeakReferenceBase function in the win32kbase.sys driver. By executing a specially-crafted proram, a local authenticated attacker could exploit this vulnerability to cause a denial of service condition.
CVSS v3 Severity:5.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H)
4.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Consequences:Denial of Service
References:Source: XF
Type: UNKNOWN
ms-windows-directcomposition02-dos(233704)

Source: CCN
Type: Talos Vulnerability Report TALOS-2022-1515
Microsoft DirectComposition GetWeakReferenceBase null pointer dereference vulnerability

Source: CCN
Type: Microsoft Web site
Microsoft Windows

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:microsoft:windows_server:2022:*:*:*:*:*:*:*
  • OR cpe:/o:microsoft:windows_11_21h2:10.0.22000.739:*:*:*:*:*:x64:*

    • * Denotes that component is vulnerable
    BACK
    microsoft windows server 2022
    microsoft windows 11 -