CVE-2018-6406 Explained : Impact and Mitigation

A vulnerability in the libwebm library before 2018-01-30 could allow remote attackers to exploit the system through various means.

Understanding CVE-2018-6406

The ParseVP9SuperFrameIndex function in libwebm_util.cc lacks validation, leading to potential security risks.

What is CVE-2018-6406?

The ParseVP9SuperFrameIndex function in libwebm_util.cc within the libwebm library does not validate child_frame_length data from a .webm file, enabling attackers to trigger information leaks, denial of service attacks, or other impacts.

The Impact of CVE-2018-6406

The vulnerability could result in information disclosure, denial of service attacks (such as heap-based buffer over-read and out-of-bounds write), and potentially other unidentified impacts.

Technical Details of CVE-2018-6406

The technical aspects of the vulnerability provide insight into its nature and potential risks.

Vulnerability Description

The ParseVP9SuperFrameIndex function in libwebm_util.cc fails to validate child_frame_length data from .webm files, creating exploitable security gaps.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: All versions before 2018-01-30

Exploitation Mechanism

Attackers can exploit this vulnerability remotely by manipulating the child_frame_length data in a .webm file, leading to various security threats.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are crucial to mitigating the risks associated with CVE-2018-6406.

Immediate Steps to Take

Update the libwebm library to a version released after 2018-01-30.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Conduct regular security audits and code reviews.
Educate developers on secure coding practices.

Patching and Updates

Apply patches provided by the libwebm library to address the vulnerability and enhance system security.