KLA12272 Multiple vulnerabilities in Mozilla Firefox

Multiple vulnerabilities were found in Mozilla Firefox. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service, spoof user interface.

Below is a complete list of vulnerabilities:

1. A memory safety vulnerability can be exploited to execute arbitrary code.
2. A security UI vulnerability for Android can be exploited to cause denial of service and spoof user interface.
3. A code execution vulnerability for Windows can be exploited to execute arbitrary code.
4. A security UI vulnerability can be exploited to spoof user interface.
5. Security UI vulnerability in address bar on Android can be exploited via spoofing user interface.

Original advisories

MFSA2021-38

Related products

Mozilla-Firefox

CVE list

CVE-2021-38494 critical

CVE-2021-29993 critical

CVE-2021-38492 high

CVE-2021-38491 high

CVE-2021-38493 critical

CVE-2021-4221 warning

Solution

Update to the latest version

Download Firefox

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• SUI

Spoof user interface. Exploitation of vulnerabilities with this impact can lead to changes in user interface to beguile user into inaccurate behavior.

Affected Products

• Mozilla Firefox earlier than 92