KLA12522
Multiple vulnerabilities in Mozilla Thunderbird

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

Below is a complete list of vulnerabilities:

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

Mozilla Thunderbird earlier than 91.9

Update to the latest version
Download Thunderbird

MFSA2022-18