Vulnerability CVE-2023-21764

Vulnerability Name:

CVE-2023-21764 (CCN-243231)

Assigned:

2022-12-13

Published:

2023-01-10

Updated:

2023-01-18

Summary:

CVSS v3 Severity:

7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/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): High Availibility (A): High

7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/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): High Availibility (A): High

CVSS v2 Severity:

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

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Consequences:

Gain Privilege

References:

Source: MITRE
Type: CNA
CVE-2023-21764

Source: XF
Type: UNKNOWN
ms-exchange-cve202321764-priv-esc(243231)

Source: CCN
Type: Microsoft Security TechCenter - January 2023
CVE-2023-21764 - Microsoft Exchange Server Elevation of Privilege Vulnerability

Vulnerable Configuration:

Configuration CCN 1:

cpe:/a:microsoft:exchange_server:2016:cumulative_update_22:*:*:*:*:*:*

OR cpe:/a:microsoft:exchange_server:2019:cumulative_update_11:*:*:*:*:*:*

OR cpe:/a:microsoft:exchange_server:2016:cumulative_update_23:*:*:*:*:*:*

OR cpe:/a:microsoft:exchange_server:2019:cumulative_update_12:*:*:*:*:*:*

Denotes that component is vulnerable

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