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

Description:

Mozilla has published two security advisories (MFSA 2020-08 and MFSA 2020-09) to address multiple browser vulnerabilities.  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 74
• Firefox ESR prior to version 68.6

Impact:

Successful exploitation of the vulnerabilities could lead to arbitrary code execution, information disclosure, security bypass, 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 74 for Windows, Macintosh and Linux
  https://www.mozilla.org/en-US/firefox/all/
  
  
• Firefox ESR 68.6 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/mfsa2020-08/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-09/
- https://www.hkcert.org/my_url/en/alert/20031102
- https://www.us-cert.gov/ncas/current-activity/2020/03/10/mozilla-releases-security-updates-firefox-and-firefox-esr
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20503
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6805
(to CVE-2020-6815)