SB2021122007 - Multiple vulnerabilities in WebKitGTK and WPE WebKit 

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Main Vulnerability Database SB2021122007

SB2021122007 - Multiple vulnerabilities in WebKitGTK and WPE WebKit

Published: December 20, 2021

Security Bulletin ID SB2021122007
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2021-30809)

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 website, 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.


2) Out-of-bounds read (CVE-ID: CVE-2021-30836)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in WebKit. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.


Remediation

Install update from vendor's website.

References