Security Alert (A20-06-03): Multiple Vulnerabilities in Firefox

Description:

Mozilla has published two security advisories (MFSA 2020-20 and MFSA 2020-21) to address multiple vulnerabilities in Firefox browser.  A remote attacker could entice a user running a vulnerable browser to visit a web page with specially crafted content to exploit the vulnerabilities.

Affected Systems:

• Firefox prior to version 77
• Firefox ESR prior to version 68.9

Impact:

Successful exploitation of the vulnerabilities could lead to arbitrary code execution, information disclosure, spoofing or application crash on an affected system.

Recommendation:

Mozilla has released new versions of the product to address the issues and they can be downloaded at the following URLs:

• Firefox 77 for Windows, Macintosh and Linux
  https://www.mozilla.org/en-US/firefox/all/
  
  
• Firefox ESR 68.9 for Windows, Macintosh and Linux
  https://www.mozilla.org/en-US/firefox/organizations/all/

Users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.

More Information:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-20/
https://www.mozilla.org/en-US/security/advisories/mfsa2020-21/
https://www.hkcert.org/my_url/en/alert/20060304
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12399
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12405 (to CVE-2020-12411)