CVE-2017-8401 Explained : Impact and Mitigation

SWFTools 0.9.2 is affected by a vulnerability in the png_load() function within lib/png.c, potentially leading to a denial of service (DoS) attack.

Understanding CVE-2017-8401

This CVE identifies a specific vulnerability in SWFTools 0.9.2 that can be exploited by malicious actors to trigger a DoS condition.

What is CVE-2017-8401?

The vulnerability in SWFTools 0.9.2 arises from an out-of-bounds read of heap data in the png_load() function at line 724 within lib/png.c. It can be activated by a malformed PNG file mishandled by the png2swf utility.

The Impact of CVE-2017-8401

Exploitation of this vulnerability could result in a denial of service (DoS) scenario, potentially disrupting the normal operation of the affected system.

Technical Details of CVE-2017-8401

SWFTools 0.9.2 vulnerability details and affected systems.

Vulnerability Description

The vulnerability allows for an out-of-bounds read of heap data in the png_load() function within lib/png.c at line 724 of SWFTools 0.9.2.

Affected Systems and Versions

Product: SWFTools 0.9.2
Vendor: N/A
Version: N/A

Exploitation Mechanism

Malicious actors can exploit this vulnerability by crafting a malformed PNG file that is not properly handled by the png2swf utility, leading to a DoS condition.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2017-8401.

Immediate Steps to Take

Update SWFTools to a patched version, if available.
Avoid opening or processing untrusted PNG files.

Long-Term Security Practices

Regularly update software and apply security patches.
Implement proper input validation and error handling mechanisms.

Patching and Updates

Check for security advisories from SWFTools for patches addressing this vulnerability.