Vulnerability CVE-2023-21776 - CERT Civis.Net

Vulnerability Name:

CVE-2023-21776 (CCN-243243)

Assigned:

2022-12-16

Published:

2023-01-10

Updated:

2023-05-11

Summary:

Microsoft Windows could allow a local authenticated attacker to obtain sensitive information, caused by a flaw in the Kernel component. By executing a specially-crafted program, an attacker could exploit this vulnerability to obtain sensitive information from Kernel memory and then use this information to launch further attacks against the affected system.

CVSS v3 Severity:

5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

CVSS v2 Severity:

4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): None Availibility (A): None

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2023-21776

Source: secure@microsoft.com
Type: UNKNOWN
secure@microsoft.com

Source: XF
Type: UNKNOWN
ms-windows-cve202321776-info-disc(243243)

Source: secure@microsoft.com
Type: UNKNOWN
secure@microsoft.com

Source: CCN
Type: Microsoft Security TechCenter - January 2023
CVE-2023-21776 - Windows Kernel Information Disclosure Vulnerability

Vulnerable Configuration:

Configuration CCN 1:

cpe:/o:microsoft:windows_7:-:sp1:*:*:ultimate_n:*:x86:*

OR cpe:/o:microsoft:windows_7::sp1:x64:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_8.1:-:-:-:*:-:-:x32:*

OR cpe:/o:microsoft:windows_8.1:::~~~~x64~:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:-:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10:::~~~~x64~:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:1809::~~~~x64~:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:1809:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10:1607:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10:1607::~~~~x64~:*:*:*:*:*

OR cpe:/o:microsoft:windows_10:20h2:*:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_10_20h2:-:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10_20h2:-:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2008:r2:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server:2022:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server:2022:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_11:22h2:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_11:22h2:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_11_21h2:10.0.22000.1042:*:*:*:*:*:arm64:*

OR cpe:/o:microsoft:windows_11_21h2:10.0.22000.1042:*:*:*:*:*:x64:*

Denotes that component is vulnerable