Vulnerability CVE-2021-21198

Vulnerability Name:

CVE-2021-21198 (CCN-199175)

Assigned:

2020-12-21

Published:

2021-03-30

Updated:

2021-06-07

Summary:

Out of bounds read in IPC in Google Chrome prior to 89.0.4389.114 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

CVSS v3 Severity:

7.4 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N)
6.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:P/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): Changed
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
5.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:P/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): None Availibility (A): None

CVSS v2 Severity:

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

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

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

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

Vulnerability Type:

CWE-125

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2021-21198

Source: MISC
Type: Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/162973/Chrome-Legacy-ipc-Message-Passed-Via-Shared-Memory.html

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

Source: MISC
Type: Release Notes, Vendor Advisory
https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop_30.html

Source: MISC
Type: Permissions Required, Vendor Advisory
https://crbug.com/1184399

Source: XF
Type: UNKNOWN
google-chrome-cve202121198-info-disc(199175)

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-ff893e12c5

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-35d2bb4627

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-c3754414e7

Source: CCN
Type: Packet Storm Security [06-04-2021]
Chrome Legacy ipc::Message Passed Via Shared Memory

Source: GENTOO
Type: Third Party Advisory
GLSA-202104-08

Vulnerable Configuration:

Configuration 1:

cpe:/a:google:chrome:*:*:*:*:*:*:*:* (Version < 89.0.4389.114)

Configuration 2:

cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

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:105615	P	chromedriver-93.0.4577.82-1.1 on GA media (Moderate)	2021-10-01
oval:org.opensuse.security:def:111334	P	Security update for opera (Important)	2021-04-22
oval:org.opensuse.security:def:103152	P	Security update for chromium (Important)	2021-04-07
oval:org.opensuse.security:def:109809	P	Security update for chromium (Important)	2021-04-07
oval:org.opensuse.security:def:11194	P	Security update for chromium (Important)	2021-04-07
oval:org.opensuse.security:def:96462	P	Security update for chromium (Important)	2021-04-07
oval:org.opensuse.security:def:111302	P	Security update for chromium (Important)	2021-04-05

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