KLA12051
Multiple vulnerabilities in Mozilla Firefox ESR

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

Below is a complete list of vulnerabilities:

1. A security bypass vulnerability can be exploited to bypass security restrictions.
2. A use-after-free vulnerability can be exploited to potentially cause denial of service.
3. A memory safety vulnerability can be exploited to to cause denial of service and execute arbitrary code.
4. OSI vulnerability can be exploited via special crafted PDF file to obtain sensitive information.
5. A type cinfusion vulnerability in JavaScript can be exploited to cause denial of service.

Mozilla Firefox earlier than 78.7

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MFSA2021-04