CVE-2017-12474 : Exploit Details and Defense Strategies

A crafted mp4 file can cause a denial of service in Bento4 mp42ts prior to version 1.5.0-616. Exploiting a NULL pointer dereference and application crash within the AP4_AtomSampleTable::GetSample function in Core/Ap4AtomSampleTable.cpp.

Understanding CVE-2017-12474

This CVE involves a vulnerability in Bento4 mp42ts that allows for a denial of service attack through a specially crafted mp4 file.

What is CVE-2017-12474?

The vulnerability in Bento4 mp42ts before version 1.5.0-616 enables remote attackers to trigger a denial of service by exploiting a NULL pointer dereference and causing an application crash with a malicious mp4 file.

The Impact of CVE-2017-12474

This vulnerability can lead to a denial of service, potentially disrupting services or applications relying on Bento4 mp42ts.

Technical Details of CVE-2017-12474

The technical aspects of this CVE are as follows:

Vulnerability Description

The issue lies in the AP4_AtomSampleTable::GetSample function in Core/Ap4AtomSampleTable.cpp, allowing attackers to exploit a NULL pointer dereference, leading to an application crash.

Affected Systems and Versions

Product: Bento4 mp42ts
Vendor: N/A
Versions Affected: Prior to 1.5.0-616

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious mp4 file to trigger the NULL pointer dereference and application crash.

Mitigation and Prevention

To address CVE-2017-12474, consider the following steps:

Immediate Steps to Take

Update Bento4 mp42ts to version 1.5.0-616 or later to mitigate the vulnerability.
Avoid opening or processing untrusted mp4 files.

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities.
Implement file type validation and input sanitization to prevent malicious file execution.

Patching and Updates

Apply patches and updates provided by Bento4 to address the vulnerability and enhance system security.