KLA12449 Multiple vulnerabilities in Mozilla Firefox ESR

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

Below is a complete list of vulnerabilities:

1. Elevation of privilege vulnerability in Maintenance (Updater) Service on Windows can be exploited to gain privileges.
2. Information disclosure vulnerability in cross-origin responses can be exploited to obtain sensitive information.
3. Memory safety vulnerability can be exploited to execute arbitrary code.
4. Security bypass vulnerability in Web Extension’s Content Security Policy and frame-ancestors directive can be exploited to bypass security restrictions.
5. Denial of service vulnerability in object state can be exploited via script execution to cause denial of service.
6. Security bypass vulnerability in extensions can be exploited to bypass security restrictions.
7. Code execution vulnerability in Drag&Drop can be exploited via special crafted image to execute arbitrary code.
8. Security bypass vulnerability in iframe can be exploited via special crafted document to bypass security restrictions.

Original advisories

MFSA2022-05

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2022-22763 critical

CVE-2022-22753 high

CVE-2022-22760 high

CVE-2022-22764 critical

CVE-2022-22754 high

CVE-2022-22761 critical

CVE-2022-22756 critical

CVE-2022-22759 critical

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.

• 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 ESR earlier than 91.6.0