Think you have a false positive on this rule?

Sid 1-39624


FILE-IMAGE Multiple products TIFF tile size buffer overflow attempt


Vulnerabilities in multiple products' TIFF image parsers allow for potential remote code execution via a crafted .tiff or .tif file.


Potential user access to a victim's machine.


CVSS base score 8.8

CVSS impact score 5.9

CVSS exploitability score 2.8

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Detailed information

Rule checks for an attempt to exploit a buffer overflow vulnerability via a crafted .tiff or .tif file. 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.

Affected systems

  • apple apple_tv 9.2.1
  • apple iphone_os 9.3.2
  • apple macosx 10.11.5
  • apple watchos 2.2.1

Ease of attack


False positives

None known

False negatives

None known

Corrective action


  • Talos research team.

Additional References