Vulnerability CVE-2021-21138

Vulnerability Name:

CVE-2021-21138 (CCN-195285)

Assigned:

2020-12-21

Published:

2021-01-19

Updated:

2021-02-11

Summary:

Use after free in DevTools in Google Chrome prior to 88.0.4324.96 allowed a local attacker to potentially perform a sandbox escape via a crafted file.

CVSS v3 Severity:

8.6 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H)
7.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/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): Changed
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/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): Network 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

CVSS v2 Severity:

6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)

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

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

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

Vulnerability Type:

CWE-416

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2021-21138

Source: CCN
Type: Google Chrome Releases Web site
Stable Channel Update for Desktop

Source: MISC
Type: Release Notes, Vendor Advisory
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html

Source: MISC
Type: Permissions Required, Third Party Advisory
https://crbug.com/1122487

Source: XF
Type: UNKNOWN
google-chrome-cve202121138-code-exec(195285)

Vulnerable Configuration:

Configuration 1:

cpe:/a:google:chrome:*:*:*:*:*:*:*:* (Version < 88.0.4324.96)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:112066	P	chromedriver-93.0.4577.82-1.1 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:100359	P	(Important)	2021-12-06
oval:org.opensuse.security:def:105615	P	chromedriver-93.0.4577.82-1.1 on GA media (Moderate)	2021-10-01
oval:org.opensuse.security:def:11170	P	Security update for chromium (Important)	2021-01-29
oval:org.opensuse.security:def:103131	P	Security update for chromium (Important)	2021-01-29
oval:org.opensuse.security:def:109788	P	Security update for chromium (Important)	2021-01-29
oval:org.opensuse.security:def:96441	P	Security update for chromium (Important)	2021-01-29
oval:org.opensuse.security:def:107025	P	Security update for chromium (Important)	2021-01-27
oval:org.opensuse.security:def:93646	P	Security update for chromium (Important)	2021-01-27
oval:org.opensuse.security:def:111194	P	Security update for chromium (Important)	2021-01-27
oval:org.opensuse.security:def:11168	P	Security update for chromium (Important)	2021-01-27
oval:org.opensuse.security:def:110656	P	Security update for chromium (Important)	2021-01-26

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