Vulnerability CVE-2020-1581

Vulnerability Name:

CVE-2020-1581 (CCN-185960)

Assigned:

2019-11-04

Published:

2020-08-11

Updated:

2021-07-21

Summary:

An elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) components handle objects in memory, aka 'Microsoft Office Click-to-Run Elevation of Privilege Vulnerability'.

CVSS v3 Severity:

7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/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): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

9.3 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

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 Type:

CWE-269

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2020-1581

Source: XF
Type: UNKNOWN
ms-office-cve20201581-priv-esc(185960)

Source: CCN
Type: Microsoft Security TechCenter - August 2020
Microsoft Office Click-to-Run Elevation of Privilege Vulnerability

Source: N/A
Type: Patch, Vendor Advisory
N/A

Source: CCN
Type: ZDI-20-1000
Microsoft Office OfficeClickToRun Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability

Vulnerable Configuration:

Configuration 1:

cpe:/a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*

OR cpe:/a:microsoft:office:2013:*:*:*:click-to-run:*:*:*

OR cpe:/a:microsoft:office:2019:*:*:*:*:-:*:*

Configuration CCN 1:

cpe:/a:microsoft:office:2019:*:~~~click-to-run~~:*:*:*:x32:*

OR cpe:/a:microsoft:office:2019:*:*:*:click-to-run:*:x64:*

Denotes that component is vulnerable

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