KLA12012
Multiple vulnerabilities in Mozilla Thunderbird

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

Below is a complete list of vulnerabilities:

1. A memory safety vulnerability can be exploited to to cause denial of service and execute arbitrary code.
2. A cross-site-scripting (XSS) vulnerability can be exploited to perform cross-site scripting attack.
3. A security bypass vulnerability in “Show Password” feature can be exploited to bypass security restrictions and obtain sensitive information.
4. A side-channel information leakage vulnerability in graphics component can be exploited to obtain sensitive information.
5. A heap buffer overflow vulnerability in Freetype can be exploited to cause denial of service.
6. A security UI vulnerability in fullscreen mode can be exploited remotely to obtain sensitive information and spoof user interface.
7. A security bypass vulnerability in DoH can be exploited to security bypass restrictions.
8. A use after free vulnerability in WebRequestService can be exploited to cause denial of service.
9. A security vulnerability in mDNS request for Windows can be exploited to obtain sensitive information.
10. A security bypass vulnerability in ServiceWorker can be exploited to bypass security restrictions and perform cross-site scripting attack.
11. A use after free vulnerability in nsTArray can be exploited to potentially cause denial of service or execute arbitrary code.

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

Mozilla Thunderbird earlier than 78.5

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MFSA2020-51