CVE-2021-21806

Published on: 07/08/2021 12:00:00 AM UTC

Last Modified on: 10/06/2022 06:15:00 PM UTC

CVE-2021-21806

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Certain versions of Webkitgtk from Webkitgtk contain the following vulnerability:

An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.

CVE-2021-21806 has been assigned by [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 8.8 - HIGH

Attack Vector ^ⓘ	Attack Complexity	Privileges Required	User Interaction
NETWORK	LOW	NONE	REQUIRED
Scope	Confidentiality Impact	Integrity Impact	Availability Impact
UNCHANGED	HIGH	HIGH	HIGH

CVSS2 Score: 6.8 - MEDIUM

Access Vector^ⓘ	Access Complexity	Authentication
NETWORK	MEDIUM	NONE
Confidentiality Impact	Integrity Impact	Availability Impact
PARTIAL	PARTIAL	PARTIAL

CVE References

Description	Tags ^ⓘ	Link
oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2021-0004	www.openwall.com text/html	MLIST [oss-security] 20210723 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0004
TALOS-2020-1214 \|\| Cisco Talos Intelligence Group - Comprehensive Threat Intelligence	talosintelligence.com text/html	MISC talosintelligence.com/vulnerability_reports/TALOS-2020-1214

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Related QID Numbers

159499 Oracle Enterprise Linux Security Update for GNOME (ELSA-2021-4381)
179986 Debian Security Update for wpewebkitwebkit2gtk (CVE-2021-21806)
239811 Red Hat Update for gnome security (RHSA-2021:4381)
296065 Oracle Solaris 11.4 Support Repository Update (SRU) 39.107.1 Missing (CPUOCT2021)
501939 Alpine Linux Security Update for webkit2gtk
710570 Gentoo Linux WebkitGTK+ Multiple Vulnerabilities (GLSA 202202-01)
751190 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:3282-1)
751194 SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2021:3296-1)
751221 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:3353-1)
751247 OpenSUSE Security Update for webkit2gtk3 (openSUSE-SU-2021:1369-1)
940070 AlmaLinux Security Update for GNOME (ALSA-2021:4381)
960077 Rocky Linux Security Update for GNOME (RLSA-2021:4381)

Known Affected Configurations (CPE V2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Application	Webkitgtk	Webkitgtk	2.30.3	All	All	All

cpe:2.3:a:webkitgtk:webkitgtk:2.30.3:*:*:*:*:*:x64:*:

No vendor comments have been submitted for this CVE

Social Mentions

Source	Title	Posted (UTC)
@CVEreport	CVE-2021-21806 : An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A spec… twitter.com/i/web/status/1…	2021-07-08 11:43:04
@RemotelyAlerts	Severity: ?? \| An exploitable use-after-free vulnerabil... \| CVE-2021-21806 \| Link for more: alerts.remotelyrmm.com/CVE-2021-21806	2022-04-19 21:29:56
/r/netcve	CVE-2021-21806	2021-07-08 12:41:26