KLA10876
Multiple vulnerabilities in Mozilla Firefox and Firefox ESR

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

Below is a complete list of vulnerabilities

1. An improper values handling at CSP can be exploited remotely to cause denial of service; (Firefox)
2. Out of bounds write can be exploited remotely via special characters manipulation to cause denial of service or possibly execute arbitrary code;
3. Out-of-bounds read can be exploited remotely via special text manipulations to cause denial of service or possibly execute arbitrary code; (Firefox)
4. Bad cast can be exploited remotely to cause denial of service or possibly execute arbitrary code;
5. An unknown vulnerability can be exploited remotely to cause denial of service or potentially execute arbitrary code; (Firefox)
6. Use-after-free vulnerability can be exploited remotely via a specially designed SVG or another unknown vectors to cause denial of service or potentially execute arbitrary code;
7. Buffer overflow can be exploited remotely to cause denial of service or possibly execute arbitrary code; (Firefox)
8. Buffer overflow can be exploited remotely via images manipulations to cause denial of service or possibly execute arbitrary code;
9. Lack of full file path disclosure restrictions can be exploited remotely via a specially designed scripts to obtain sensitive information; (Firefox)
10. Lack of content restrictions can be exploited remotely to bypass white-list restrictions; (Firefox)
11. Timing attack vulnerability can be exploited remotely via a specially designed IFRAME to obtain sensitive information; (Firefox)
12. An improper certificates handling can be exploited remotely via man-in-the-middle attack to spoof add-on updates;
13. Multiple memory safety vulnerabilities can be exploited remotely to cause denial of service or potentially execute arbitrary code;
14. An improper resources storage at Resource Timing API can be exploited remotely via a specially designed content to obtain sensitive information; (Firefox ESR)
15. Integer overflow at WebSockets can be exploited remotely to cause denial of service or potentially execute arbitrary code; (Firefox ESR)

Mozilaa Firefox versions earlier than 49
Mozilla Firefox ESR versions earlier than 45.4

Update to the latest version
Get Firefox ESR
Get Firefox

Mozilla Firefox advisory
Mozilla Firefox ESR advisory