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

Below is a complete list of vulnerabilities:

1. Use after free vulnerability in Web Worker can be exploited to potentially cause denial of service.
2. Sandbox escape vulnerability on Windows to cause denial of service.
3. Security bypass vulnerability in ‘Copy as cURL’ component on Windows can be exploited to bypass security restrictions and execute arbitrary code.
4. Security bypass vulnerability in ‘Copy as cURL’ component can be exploited to bypass security restrictions and obtain sensitive information.
5. Stack buffer overflow vulnerability in SCTP component can be exploited to potentially cause denial of service.
6. Memory corruption vulnerability can be exploited to execute arbitrary code.

Mozilla Firefox ESR earlier than 68.8

Update to the latest version
Download Firefox ESR

MFSA2020-17