SB2021092018 - Remote code execution in WebKitGTK and WPE WebKit

Description

This security bulletin contains information about 1 security vulnerability.

1) Use-after-free (CVE-ID: CVE-2021-30858)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing HTML content in WebKit. A remote attacker can trick the victim to visit a specially crafted web page, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Note, the vulnerability is being actively exploited in-the-wild.

Remediation

Install update from vendor's website.

References

• https://webkitgtk.org/security/WSA-2021-0005.html
• https://webkitgtk.org/security/WSA-2021-0006.html