KLA12011
Multiple vulnerabilities in Mozilla Firefox ESR

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

Below is a complete list of vulnerabilities:

1. An elevation of privilege vulnerability in the Remote Debugging via USB feature for Android can exploited to gain privileges.
2. A cross-site-scripting (XSS) vulnerability can be exploited to perform cross-site scripting attack.
3. A side-channel information leakage vulnerability in graphics component can be exploited to obtain sensitive information.
4. A heap buffer overflow vulnerability in Freetype can be exploited to cause denial of service.
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.

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

Mozilla Firefox ESR earlier than 78.5

Update to the latest version
Download Firefox ESR

MFSA2020-51