Rule Category

FILE-IMAGE -- Snort detected suspicious traffic targeting vulnerabilities found inside images files, regardless of delivery method, targeted software, or image type. (Examples include: jpg, png, gif, bmp). These rules search for malformed images used to exploit system. Attackers alter image attributes, often to include shell code, so they are susceptible to vulnerabilities when they are parsed and send commands instead of loading the image.

Alert Message

FILE-IMAGE Multiple products TIFF tile size buffer overflow attempt

Rule Explanation

Vulnerabilities in multiple products' TIFF image parsers allow for potential remote code execution via a crafted .tiff or .tif file. Impact: Potential user access to a victim's machine. Details: Rule checks for an attempt to exploit a buffer overflow vulnerability via a crafted .tiff or .tif file. Ease of Attack: Hard

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Talos research team.

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-2016-4631
ImageIO in Apple iOS before 9.3.3, OS X before 10.11.6, tvOS before 9.2.2, and watchOS before 2.2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted TIFF file.
Details
Severity Base Score8.8
Impact Score5.9 Exploit Score2.8
Confidentiality ImpactHIGH Integrity ImpactHIGH
Availability ImpactHIGH Access Vector
Authentication Ease of Access