Check Point Advisories

MPlayer SAMI Subtitle sub_read_line_sami Buffer Overflow

Check Point Reference: CPAI-2011-586
Date Published: 20 Dec 2011
Severity: High
Last Updated: Sunday 14 February, 2016
Source:
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description MPlayer is an open source multimedia player that runs on numerous operating systems including Linux, Windows and Mac OS X. Ports also exist for Amazon's Kindle, and the Nintendo Wii. It can play many audio and video formats (MPEG, DivX, Ogg, etc.) and handle various streaming protocols. A code execution vulnerability has been reported in MPlayer. Specifically, the vulnerability is due a stack buffer overflow when reading a long caption from a SAMI subtitle file. A remote, unauthenticated attacker could exploit this vulnerability by enticing a target user to download a crafted SAMI file, resulting in the execution of arbitrary code in the security context of the target user.

Protection Overview

This protection will detect and block the transferring of malformed SAMI files.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the MPlayer SAMI Subtitle sub_read_line_sami Buffer Overflow protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Media Player Enforcement Violation.
Attack Information:  MPlayer SAMI subtitle sub_read_line_sami buffer overflow

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