KLA11206
Multiple vulnerabilities in Mozilla Firefox and Firefox ESR

Multiple serious vulnerabilitieswere found in Mozilla Firefox and Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to bypass security restrictions, execute arbitrary code, gain privileges, perform cross-site scripting attack, spoof user interface, cause denial of service.

Below is a complete list of vulnerabilities:

1. Buffer overflow vulnerability can be exploited remotely via manipulating the SVG animatedPathSegList through script to cause denial of service;
2. A use-after-free vulnerability can be exploited remotely to cause denial of service;
3. An unspecified vulnerability in parameters of IPC messegas can be exploited remotely to cause denial of service;
4. An unspecified vulnerability in WebRTC connections can be exploited remotely to cause denial of service;
5. An unspecified vulnerability in fetch() API can be exploited remotely to bypass security restrictions;
6. An unspecified vulnerability in the Find API for WebExtensions can be exploited remotely to obtain sensitive information;
7. An unspecified vulnerability related to changing of app.support.baseURL preference can be exploited remotely to perform cross site scripting (XSS) attack;
8. An unspecified vulnerability in WebExtensions can be exploited remotely to bypass security restrictions;
9. An unspecified vulnerability in WebExtensions can be exploited remotely to perform cross site scripting (XSS) attack;
10. An unspecified vulnerability related to creating of shared worker from data:URL can be exploited remotely to bypass security restrictions;
11. A spoofing vulnerability related to opening malicious site in Android Custom Tab with extremely long domain name can be exploited remotely to spoof user interface;
12. An unspecified vulnerability related to moz-icon:protocol can be exploited remotely to obtain sensitive information;
13. An unspecified vulnerability in the notifications Push API can be exploited remotely to cause denial of service;
14. An unspecified vulnerability related to Media Capture and Streams API permissions can be exploited remotely to spoof user interface;
15. An unspecified vulnerability related to URLs using javascript: can be exploited remotely to perform cross site scripting (XSS) attack;
16. Multiple memory corruption vulnerabilities can be exploited remotely to execute arbitrary code;
17. An integer overflow vulnerability related to conversion of text to some Unicode characters can be exploited remotely to cause denial of service;
18. An integer overflow vulnerability can be exploited remotely to cause denial of service;
19. An out-of-bounds memory write in libvorbis can be exploited remotely possibly to execute arbitrary code;
20. Memory corruption vulnerability can be exploited remotely to execute arbitrary code;
21. A buffer overflow vulnerability can be exploited remotely via specially crafted script to cause denial of service;
22. An out-of-bounds memory write vulnerability can be exploited remotely via specially crafted IPC messages to bypass security restrictions and execute arbitrary code.

Technical details

Vulnerabilities (2), (6)-(15) affects only Mozilla Firefox. Vulnerabilities (17, 18, 20) affects only Mozilla Firefox ESR. NB: This vulnerability does not have any public CVSS rating, so rating can be changed by the time.

Mozilla Firefox ESR versions earlier then 52.7
Mozilla Firefox versions earlier then 59

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