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 HTTP index format out of bounds read attempt
This event is generated when an out of bounds read attempt is detected in Mozilla Firefox.
Attempted Administrator Privilege Gain
Ease of Attack:
What To Look For
This event is triggered by a buffer overflow, vulnerable in Mozilla Firefox while parsing "application/http-index-format" formatted content when the header contains improperly formatted data.
No public information
No known false positives
Cisco Talos Intelligence Group
MITRE ATT&CK Framework
Technique: Exploitation for Client Execution
For reference, see the MITRE ATT&CK vulnerability types here:
Buffer Overflows occur when a memory location is filled past its expected boundaries. Computer attackers target systems without proper terminating conditions on buffers, which then write the additional information in other locations in memory, overwriting what is there. This could corrupt the data, making the system behave erratically or crash. The new information could include malicious executable code, which might be executed.
CVE Additional Information