Simple DirectMedia Layer Fill_IMA_ADPCM_block Heap-Based Buffer Over-Read Vulnerability [CVE-2019-13626]

CVE number – CVE-2019-13626

A vulnerability in Simple DirectMedia Layer (SDL) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.

The vulnerability is due to an integer overflow condition that exists in the IMA_ADPCM_decode()function, as defined in the audio/SDL_wave.c source code file of the affected software. An attacker could exploit this vulnerability by persuading a user to access a file that submits malicious input to the targeted system. A successful exploit could trigger a heap-based buffer over-read condition in the Fill_IMA_ADPCM_block function, resulting in a DoS condition. Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. The vendor has confirmed the vulnerability; however, software updates are not available.

Analysis

• To exploit this vulnerability, an attacker may use misleading language or instructions to persuade a user to access a file that submits malicious input to the targeted system.

Safeguards

• Administrators are advised to contact the vendor regarding future updates and releases.
  
  Administrators are advised to allow only trusted users to have network access.
  
  Administrators are advised to use an unprivileged account when browsing the Internet.
  
  Administrators are advised to monitor critical systems.
  
  Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.
  
  Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.

Vendor Announcements

• The vendor has released a bug report at the following link: Bug 4522

Fixed Software

• At the time this alert was first published, the vendor had not released software updates.