Description:

Mozilla has published security advisories to address multiple vulnerabilities found in Firefox.  A remote attacker could entice a user running a vulnerable browser to open a web page with specially crafted content to exploit the vulnerabilities.

Reports indicate that the vulnerabilities (CVE-2019-11709 and CVE-2019-11710) allow an attacker to run arbitrary code by leveraging memory safety bugs. Users are advised to take immediate action to patch your affected systems to mitigate the elevated risk of cyber attacks.

Affected Systems:

• Firefox prior to version 68
• Firefox ESR prior to version 60.8

Impact:

Successful exploitation of the vulnerabilities could lead to sandbox escape, arbitrary code execution, application crash, security restriction bypass and information disclosure 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 68 for Windows, Macintosh and Linux
  https://www.mozilla.org/en-US/firefox/all/
  
  
• Firefox ESR 60.8 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/mfsa2019-21/
https://www.mozilla.org/en-US/security/advisories/mfsa2019-22/
https://www.hkcert.org/my_url/en/alert/19071003
https://www.us-cert.gov/ncas/current-activity/2019/07/09/mozilla-releases-security-updates-firefox-and-firefox-esr
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9811
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11709 (to CVE-2019-11721)
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11723 (to CVE-2019-11725)
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11727 (to CVE-2019-11730)