KLA11023 Multiple vulnerabilities in VideoLAN VLC Media Player

Multiple serious vulnerabilities have been found in VideoLAN VLC Media Player. Malicious users can exploit these vulnerabilities to cause a denial of service or execute arbitrary code.

Below is a complete list of vulnerabilities:

1. Heap out-of-bound read in CreateHtmlSubtitle and in ParseJSS can be exploited via a specially designed subtitles file possibly to cause a denial of service;
2. Potential heap based buffer overflow in Parse JSS can be exploited via a specially designed subtitles file to execute arbitrary code;
3. Heap out-of-bound read in ParseJSS can be exploited via a specially designed subtitles file possibly to cause a denial of service.

Technical details

Vulnerabilities (1) exists because of missing check of string termination and allow to read data beyond allocated memory.

Vulnerability (2) exists because of skipping NULL terminator in input strings.

Vulnerability (3) exists because check of string length is missed.

Original advisories

git.videolan.org CVE-2017-8312 confirm

git.videolan.org CVE-2017-8311 confirm

git.videolan.org CVE-2017-8313 confirm

git.videolan.org CVE-2017-8310 confirm

Exploitation

Public exploits exist for this vulnerability.

Related products

VLC-media-player

CVE list

CVE-2017-8310 warning

CVE-2017-8311 high

CVE-2017-8312 warning

CVE-2017-8313 warning

Solution

Update to the latest version

Download VLC media player

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

Affected Products

• VideoLAN VLC Media Player earlier than 2.2.5