Mozilla has released a securtiy updates for it's products Firefox and Firefox ESR. A remote attacker could exploit these vulnerabilities to obtain accsess of an affected system.
SRB-CERT recommends all users to update their Firefox to version 62.0.3 and Firefox ESR 60.2.2 released in October in order to avoid exploitation this kind of vulnerabilities.
For more details please visit link - https://www.mozilla.org/en-US/security/advisories/mfsa2018-24/