BROWSER-FIREFOX -- Snort has detected traffic known to exploit vulnerabilities present in the Firefox browser, or products that have the "Gecko" engine (Thunderbird email client, etc.).
BROWSER-FIREFOX Mozilla Firefox ESR NotifyTimeChange use after free attempt
This event is generated when an attacker attempts to exploit a use after free vulnerability affecting Mozilla Firefox.
Attempted User Privilege Gain
This rule checks for an attempt to trigger a use after free vulnerability in Firefox's handling of SVG animations.
Ease of Attack:
Simple; exploits are publicly-available
What To Look For
No public information
No known false positives
Cisco Talos Intelligence Group
MITRE ATT&CK Framework
For reference, see the MITRE ATT&CK vulnerability types here:
CVE Additional Information