CVE-2021-21806 — HIGH (8.8)

Vulnerability Description

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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Webkitgtk	Webkitgtk	2.30.3

Related Weaknesses (CWE)

CWE-416

References

http://www.openwall.com/lists/oss-security/2021/07/23/1Mailing ListThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1214ExploitThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/07/23/1Mailing ListThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1214ExploitThird Party Advisory

FAQ

What is CVE-2021-21806?

CVE-2021-21806 is a vulnerability with a CVSS score of 8.8 (HIGH). 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. ...

How severe is CVE-2021-21806?

CVE-2021-21806 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-21806?

Check the references section above for vendor advisories and patch information. Affected products include: Webkitgtk Webkitgtk.