KLA12010 Multiple vulnerabilities in Mozilla Firefox

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

Below is a complete list of vulnerabilities:

1. A heap buffer overflow vulnerability in Freetype can be exploited to cause denial of service.
2. A side-channel information leakage vulnerability in graphics component can be exploited to obtain sensitive information.
3. An elevation of privilege vulnerability in the Remote Debugging via USB feature for Android can exploited to gain privileges.
4. A cross-site-scripting (XSS) vulnerability can be exploited to perform cross-site scripting attack.
5. A security UI vulnerability in fullscreen mode can be exploited remotely to obtain sensitive information and spoof user interface.
6. A memory safety vulnerability can be exploited to to cause denial of service and execute arbitrary code.
7. A denial of service vulnerability in History and Location interfaces can be exploited to potentially cause denial of service.
8. A security bypass vulnerability in DoH can be exploited to security bypass restrictions.
9. A security bypass vulnerability in Screenshoot mode can be exploited to bypass securty restrictions.
10. A security bypass vulnerability in OneCRL for Android can be exploited to cause denial of service.
11. A security UI vulnerability in fullscreen mode for Android can be exploited to spoof user interface and perform cross-site scripting attack.
12. A use after free vulnerability in nsTArray can be exploited to potentially cause denial of service or execute arbitrary code.
13. A security bypass vulnerability in “Show Password” feature can be exploited to bypass security restrictions and obtain sensitive information.
14. A use after free vulnerability in WebRequestService can be exploited to cause denial of service.
15. A memory corruption vulnerability in JIT compilation can be exploited to potentially cause denial of service.
16. A security vulnerability in mDNS request for Windows can be exploited to obtain sensitive information.
17. A security bypass vulnerability in ServiceWorker can be exploited to bypass security restrictions and perform cross-site scripting attack.
18. A security vulnerability in cookies can be exploited to obtain sensitive information.

Original advisories

MFSA2020-50

Exploitation

Public exploits exist for this vulnerability.

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Mozilla-Firefox

CVE list

CVE-2020-15999 high

CVE-2020-16012 warning

CVE-2020-26964 high

CVE-2020-26951 high

CVE-2020-26953 warning

CVE-2020-26956 high

CVE-2020-26962 high

CVE-2020-26968 critical

CVE-2020-26963 warning

CVE-2020-26961 high

CVE-2020-26967 high

CVE-2020-26957 high

CVE-2020-26954 warning

CVE-2020-26969 critical

CVE-2020-26960 critical

CVE-2020-26965 high

CVE-2020-26959 critical

CVE-2020-26952 critical

CVE-2020-26966 high

CVE-2020-26958 high

CVE-2020-26955 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.

• XSS/CSS

Cross site scripting. Exploitation of vulnerabilities with this impact can lead to partial interception of information transmitted between user and site.

• 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 83