CVE-2019-9746 Explained : Impact and Mitigation

A vulnerability in libwebm prior to March 8, 2019, could lead to a Denial of Service (DoS) attack due to a NULL pointer dereference in specific functions.

Understanding CVE-2019-9746

This CVE describes a vulnerability in libwebm that could be exploited for a DoS attack.

What is CVE-2019-9746?

Prior to March 8, 2019, an issue existed in libwebm where a NULL pointer dereference could occur in the functions OutputCluster and OutputTracks within webm_info.cc. This could lead to an abort, enabling a Denial of Service (DoS) attack. This issue is similar to CVE-2018-19212.

The Impact of CVE-2019-9746

The vulnerability could allow an attacker to trigger a DoS attack by exploiting the NULL pointer dereference in libwebm.

Technical Details of CVE-2019-9746

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability in libwebm before March 8, 2019, could result in a NULL pointer dereference in the functions OutputCluster and OutputTracks, leading to a DoS attack.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by triggering a NULL pointer dereference in the specific functions within webm_info.cc.

Mitigation and Prevention

Protecting systems from CVE-2019-9746 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply patches or updates provided by the vendor to address the vulnerability.
Monitor security advisories for any new information or patches related to this CVE.

Long-Term Security Practices

Regularly update software and libraries to the latest versions to mitigate known vulnerabilities.
Implement proper input validation to prevent NULL pointer dereference vulnerabilities.

Patching and Updates

Ensure that the libwebm library is updated to a version released after March 8, 2019, to eliminate the vulnerability.