KLA12521
Multiple vulnerabilities in Mozilla Firefox ESR

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

Below is a complete list of vulnerabilities:

1. Memory safety vulnerability can be exploited to execute arbitrary code.
2. An elevation of privilege vulnerability in iframe Sandbox can be exploited remotely to gain privileges.
3. Bypassing permission prompt in nested browsing contexts can be exploited to bypass security restrictions.
4. Fullscreen notification bypass using popups can be exploited to spoof user interface.
5. Security vulnerability in reader mode can be exploited to bypass security restrictions.
6. Leaking browser history with CSS variables can be exploited to obtain sensitive information.

Mozilla Firefox ESR earlier than 91.9

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MFSA2022-17