Rule Category

FILE-MULTIMEDIA -- Snort detected traffic targeting vulnerabilities in multimedia files (mp3, movies, wmv, etc.).

Alert Message

FILE-MULTIMEDIA Adobe Flash Player malformed MP4-AVC out-of-bounds read attempt

Rule Explanation

This event is generated when an attempt to exploit a vulnerability in Adobe Flash Player, using a malicious MP4 file, is detected. Impact: High Details: This vulnerability occurs as a result of computation that reads data that is past the end of the target buffer; the computation is part of MP4-Advanced Video Coding (AVC) processing. A malformed AVC stream within MP4 input leads to flawed computation that involves pointer offset arithmetic which does not adequately account for the buffer boundaries Ease of Attack: Simple

What To Look For

Known Usage

No public information

False Positives

No known false positives


Cisco Talos Intelligence Group

MITRE ATT&CK Framework



For reference, see the MITRE ATT&CK vulnerability types here:


Additional Links

Rule Vulnerability

CVE Additional Information

Adobe Flash Player and earlier have an out-of-bounds read vulnerability. Successful exploitation could lead to information disclosure.
Severity Base Score7.5
Impact Score3.6 Exploit Score3.9
Confidentiality ImpactHIGH Integrity ImpactNONE
Availability ImpactNONE Access Vector
Authentication Ease of Access