KLA12149 Multiple vulnerabilities in Mozilla Firefox

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

Below is a complete list of vulnerabilities:

1. A vulnerability in 3D CSS can be exploited to spoof user interface;
2. A memory corruption vulnerability can be exploited to execute arbitrary code;
3. Memory corruption and vulnerability can be exploited to cause denial of service;
4. A vulnerability related to session history can be exploited to security bypass restrictions;
5. A integer overflow vulnerability can be exploited to security bypass restrictions;
6. A race condition vulnerability in requestPointerLock() can be exploited to obtain sensitive information;
7. A use-after-free vulnerability can be exploited to execute arbitrary code;
8. A Null read vulnerability related to WebAssembly JIT can be exploited to cause denial of service;
9. A vulnerability related to secure lock icon can be exploited to spoof user interface;
10. A HTML injection vulnerability can be exploited to execute arbitrary code;
11. A vulnerability related to FTP URL can be exploited to execute arbitrary code;
12. A memory safety vulnerability related to Responsive Design Mode can be exploited to execute arbitrary code;
13. Elevation of privilege vulnerability related to Blob URL can be exploited to gain privileges;

Original advisories

mfsa2021-16

Related products

Mozilla-Firefox

CVE list

CVE-2021-23994 critical

CVE-2021-29946 critical

CVE-2021-29945 high

CVE-2021-24002 critical

CVE-2021-23998 high

CVE-2021-23995 critical

CVE-2021-23999 critical

CVE-2021-23996 high

CVE-2021-29947 critical

CVE-2021-24001 warning

CVE-2021-24000 warning

CVE-2021-23997 critical

CVE-2021-29944 high

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 88