CVE-2017-17128 : Security Advisory and Response

A crafted file can lead to a denial of service in Libav 12.2 if the h264_slice_init function is exploited, resulting in a segmentation fault and application crash.

Understanding CVE-2017-17128

This CVE involves a vulnerability in Libav 12.2 that can be triggered by a specially crafted file, leading to a denial of service.

What is CVE-2017-17128?

The h264_slice_init function in libavcodec/h264_slice.c in Libav 12.2 allows remote attackers to cause a denial of service (segmentation fault and application crash) by exploiting a crafted file.

The Impact of CVE-2017-17128

The exploitation of this vulnerability can result in a denial of service condition, causing the application to crash due to a segmentation fault.

Technical Details of CVE-2017-17128

This section provides more technical insights into the vulnerability.

Vulnerability Description

A crafted file can trigger the vulnerability in the h264_slice_init function of Libav 12.2, leading to a denial of service.

Affected Systems and Versions

Affected Version: Libav 12.2
Product: Not applicable
Vendor: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by manipulating the h264_slice_init function with a specially crafted file, causing a segmentation fault and application crash.

Mitigation and Prevention

To address CVE-2017-17128, follow these mitigation strategies:

Immediate Steps to Take

Apply vendor patches or updates if available.
Avoid opening files from untrusted sources.

Long-Term Security Practices

Regularly update software and libraries to the latest versions.
Implement file input validation mechanisms to prevent exploitation through crafted files.

Patching and Updates

Check for patches or updates from Libav to fix the vulnerability.