KLA12194 Multiple vulnerabilities in Mozilla Firefox ESR

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to obtain sensitive information, cause denial of service, execute arbitrary code.

Below is a complete list of vulnerabilities:

1. An out of bounds read vulnerability can be exploited to obtain sensitive information or cause denial of service.
2. A memory safety vulnerability can be exploited to execute arbitrary code.

Original advisories

MFSA2021-24

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2021-29967 critical

CVE-2021-29964 high

KB list

5003636

5003681

5003637

5003671

5003696

5003646

5003638

5003697

5003635

5003687

Solution

Update to the latest version

Download Firefox ESR

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.

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• 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.

Affected Products

• Mozilla Firefox ESR earlier than 78.11