KLA12229 Multiple vulnerabilities in Mozilla Firefox ESR

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

Below is a complete list of vulnerabilities:

1. A memory safety vulnerability can be exploited to execute arbitrary code.
2. An out of bounds write vulnerability in ANGLE can be exploited to cause denial of service or execute arbitrary code.
3. A use after free vulnerability can be exploited via special crafted webpage to cause denial of service or execute arbitrary code.

Original advisories

MFSA2021-29

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2021-30547 critical

CVE-2021-29976 critical

CVE-2021-29970 critical

Solution

Update to the latest vresion

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.

• 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 78.12