KLA11982 Multiple vulnerabilitieis in Mozilla Firefox

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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in WebRTC can be exploited to cause denial of service and bypass security restrictions.
2. Security UI vulnerability can be exploited to spoof user interface.
3. Security vulnerability can be exploited to bypass security restrictions.
4. Security vulnerability in WASM threads can be exploited to potentially cause denial of service.
5. Memory vulnerability can be exploited to execute arbitrary code.

Original advisories

MFSA2020-45

Related products

Mozilla-Firefox

CVE list

CVE-2020-15969 critical

CVE-2020-15682 high

CVE-2020-15254 critical

CVE-2020-15680 high

CVE-2020-15681 critical

CVE-2020-15683 critical

CVE-2020-15684 critical

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 82