KLA12193 Multiple vulnerabilities in Mozilla Firefox

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

Below is a complete list of vulnerabilities:

1. A security bypass vulnerability in private browsing mode on Android can be exploited to bypass security restrictions.
2. A spoofing vulnerability in password manager on Android can be exploited to perform domain spoofing and obtain sensitive information.
3. A memory safety vulnerability can be exploited to execute arbitrary code.
4. A security bypass vulnerability can be exploited to bypass security restrictions.
5. A denial of service vulnerability in popups on Android can be exploited to cause denial of service.
6. A security bypass vulnerability in private browsing mode can be exploited to bypass security restrictions.
7. A security UI vulnerability can be exploited to spoof user interface.
8. An out of bounds read vulnerability can be exploited to obtain sensitive information or cause denial of service.

Original advisories

MFSA2021-23

Related products

Mozilla-Firefox

CVE list

CVE-2021-29963 warning

CVE-2021-29965 high

CVE-2021-29967 critical

CVE-2021-29959 warning

CVE-2021-29962 warning

CVE-2021-29960 warning

CVE-2021-29961 warning

CVE-2021-29966 critical

CVE-2021-29964 high

KB list

5001963

5001946

5001944

5001955

5001953

5001943

5001956

5001939

5001934

5001954

5001945

5001947

5001962

4011698

5001950

5001922

5001942

5001951

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.

• 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.

• 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 89