KLA62089 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, execute arbitrary code, spoof user interface, obtain sensitive information, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. Out of bounds memory access vulnerability in WebGL2 blitFramebuffer can be exploited to cause denial of service.
2. Use after free vulnerability in MessagePort::Entangled can be exploited to cause denial of service or execute arbitrary code.
3. Clickjacking permission prompts vulnerability in fullscreen transition can be exploited remotely to spoof user interface.
4. Use after free vulnerability in ReadableByteStreamQueueEntry::Buffer can be exploited to cause denial of service or execute arbitrary code.
5. Information disclosure vulnerability for X11 can be exploited to obtain sensitive information.
6. Security feature bypass vulnerability can be exploited remotely to bypass security restrictions.
7. Memory safety vulnerability can be exploited to execute arbitrary code.

Original advisories

MFSA2023-50

Related products

Mozilla-Firefox-ESR

CVE list

CVE-2023-6212 unknown

CVE-2023-6204 unknown

CVE-2023-6208 unknown

CVE-2023-6209 unknown

CVE-2023-6207 unknown

CVE-2023-6205 unknown

CVE-2023-6206 unknown

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 115.5