Netskope Threat Labs

BROWSER-FIREFOX Mozilla Firefox method array.prototype.push remote code execution attempt

IPS-CFWIPS-SWG

1 SID: 48625

First seen
December 2023
Last seen
October 2026

Detects JavaScript that exploits CVE-2018-12387, a flaw in Firefox's handling of Array.prototype.push with user-supplied arguments that can allow code execution. The rule matches the push invocation with numeric grooming and typed array setup that public exploits use to corrupt memory.