Mozilla has published security advisories to address multiple vulnerabilities found in Firefox. A remote attacker could entice a user running the vulnerable browser to open a web page with specially crafted content to exploit the vulnerabilities.
Successful exploitation of the vulnerabilities could lead to arbitrary code execution, information disclosure, elevation of privilege, security permission bypass, cross-site scripting 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/en-US/security/advisories/mfsa2018-15/
https://www.mozilla.org/en-US/security/advisories/mfsa2018-16/
https://www.mozilla.org/en-US/security/advisories/mfsa2018-17/
https://www.hkcert.org/my_url/en/alert/18062701
https://www.us-cert.gov/ncas/current-activity/2018/06/26/Mozilla-Releases-Security-Updates-Firefox
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5156
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5186 (to CVE-2018-5188)
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12358 (to CVE-2018-12371)