Mozilla has published security advisories to address multiple vulnerabilities found in Firefox. These vulnerabilities are caused by memory corruption, use-after-free error and memory safety bugs, etc. A remote attacker could entice a user to open a web page with specially crafted content to exploit the vulnerabilities.
A successful attack could lead to arbitrary code execution, denial of service, elevation of privilege, information disclosure, or application crash on an affected system.
Mozilla has released new versions of the product to address the issues and they can be downloaded at the following URLs:
Users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.
https://www.mozilla.org/security/advisories/
https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox/
https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/
https://www.mozilla.org/en-US/security/advisories/mfsa2017-01/
https://www.mozilla.org/en-US/security/advisories/mfsa2017-02/
https://www.hkcert.org/my_url/en/alert/17012501
https://www.us-cert.gov/ncas/current-activity/2017/01/24/Mozilla-Releases-Security-Updates
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5373 (to CVE-2017-5396)