Rule Category

FILE-FLASH -- Snort has detected suspicious traffic via the Adobe Flash Player. Flash is a common target of code execution, overflow, DoS, and memory corruption attacks in particular, via swifs, action scripts, etc. Many networks block Flash altogether; the application will be deprecated in 2020.

Alert Message

FILE-FLASH Adobe Flash Player FLV Nellymoser audio codec stack overflow attempt

Rule Explanation

This event is generated when an attacker attempts to exploit a stack overflow vulnerability in Adobe Flash Player. Impact: Attempted User Privilege Gain Details: This rule checks for attempts to exploit a stack overflow vulnerability in Adobe Flash Player's parsing of FLV files with Nellymoser audio codecs. Ease of Attack:

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic:

Technique:

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

CVE

Additional Links

Rule Vulnerability

CVE Additional Information

CVE-2015-4432
Heap-based buffer overflow in Adobe Flash Player before 13.0.0.302 and 14.x through 18.x before 18.0.0.203 on Windows and OS X and before 11.2.202.481 on Linux, Adobe AIR before 18.0.0.180, Adobe AIR SDK before 18.0.0.180, and Adobe AIR SDK & Compiler before 18.0.0.180 allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2015-3135 and CVE-2015-5118.
Details
SeverityHIGH Base Score10.0
Impact Score10.0 Exploit Score10.0
Confidentiality ImpactCOMPLETE Integrity ImpactCOMPLETE
Availability ImpactCOMPLETE Access VectorNETWORK
AuthenticationNONE Ease of AccessLOW