KLA11825 Multiple vulnerabilities in Mozilla Firefox ESR

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to cause denial of service, bypass security restrictions, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. Memory corruption vulnerability on JavaScript Objects on ARM64 platforms can be exploited to potentially cause denial of service.
2. Use after free vulnerability in a pointer can be exploited to potentially cause denial of service.
3. SB vulnerability in add-on updates can be exploited to bypass security restrictions.
4. Information disclosure vulnerbaility in URL object can be exploited to obtain sensitive information.
5. Use after free vulnerability in nsGlobalWindowInner component can be exploited to potentially cause denial of service.

Original advisories

MFSA2020-25

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2020-12417 critical

CVE-2020-12421 warning

CVE-2020-12420 critical

CVE-2020-12418 warning

CVE-2020-12419 critical

Solution

Update to the latest version

Download Firefox ESR

Impacts

• 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 ESR earlier than 68.10.0