KLA62518 Multiple vulnerabilities in Mozilla Firefox ESR

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

Below is a complete list of vulnerabilities:

1. Security vulnerability in Symlinks can be exploited to bypass security restrictions.
2. Security vulnerability in VideoBridge can be exploited to bypass security restrictions.
3. Memory safety vulnerability can be exploited to execute arbitrary code.
4. Use after free vulnerability in PR_GetIdentitiesLayer can be exploited to execute arbitrary code.
5. Information disclosure vulnerability in EncryptingOutputStreams can be exploited to obtain sensitive information.
6. Clickjacking permission prompts vulnerability in popup transition can be exploited remotely to spoof user interface.
7. Heap buffer overflow vulnerability in nsTextFragment can be exploited to cause denial of service.
8. Heap buffer overflow vulnerability in nsWindow::PickerOpen(void) can be exploited to cause denial of service.
9. Heap buffer overflow vulnerability in WebGL ACE can be exploited to execute arbitrary code.
10. Security vulnerability in ShutdownObserver can be exploited to bypass security restrictions.
11. Use after free vulnerability in nsDNSService can be exploited to execute arbitrary code.

Original advisories

MFSA2023-54

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2023-6857 warning

CVE-2023-6860 warning

CVE-2023-6864 warning

CVE-2023-6859 warning

CVE-2023-6865 warning

CVE-2023-6867 warning

CVE-2023-6858 warning

CVE-2023-6861 warning

CVE-2023-6856 warning

CVE-2023-6863 warning

CVE-2023-6862 warning

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.

• 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 115.6