KLA11942 Multiple vulnerabilities in Mozilla Firefox

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

Below is a complete list of vulnerabilities:

1. MediaError Message vulnerability can be exploited to security bypass restrictions and obtain sensitive information.
2. Data Race vulnerability can be exploited to security bypass restrictions and cause denial of service.
3. Converting coordinates vulnerability can be exploited to bypass security restrictions.
4. Elevation of privilege vulnerability on Windows can be exploited to bypass security restrictions, gain privileges and execute arbitrary code.
5. Security UI vulnerability in address bar can be exploited to perform domain spoofing.
6. Security UI vulnerability in eval() function can be exploited to spoof user interface and execute arbitrary code.
7. ECDSA signature generation vulnerability can be exploited to security bypass restrictions.
8. Memory safety vulnerabilities can be exploited to execute arbitrary code.
9. EC scalar point multiplication vulnerability can be exploited to obtain sensitive information.
10. Heap overflow vulnerability can be exploited to potentially cause denial of service and execute arbitrary code.

Original advisories

MFSA2020-36

Related products

Mozilla-Firefox

CVE list

CVE-2020-15666 high

CVE-2020-15668 warning

CVE-2020-12400 warning

CVE-2020-15663 critical

CVE-2020-15665 warning

CVE-2020-15664 high

CVE-2020-12401 warning

CVE-2020-15670 critical

CVE-2020-6829 high

CVE-2020-15667 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.

• 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.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

• 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 80