CVE-2017-16796 Explained : Impact and Mitigation

SWFTools 0.9.2 is affected by a vulnerability that allows remote attackers to trigger a denial of service attack by exploiting the png_load function in lib/png.c. This can lead to application crashes and other potential consequences.

Understanding CVE-2017-16796

This CVE entry describes a vulnerability in SWFTools 0.9.2 that arises from improper validation in the png_load function.

What is CVE-2017-16796?

The png_load function in lib/png.c of SWFTools 0.9.2 lacks proper validation of a realloc call's return value. This flaw can be exploited by attackers to launch denial of service attacks, potentially resulting in application crashes or other adverse effects, particularly through manipulated PNG files containing an IDAT tag.

The Impact of CVE-2017-16796

The vulnerability in SWFTools 0.9.2 can have the following impacts:

Remote attackers can trigger denial of service attacks.
Application crashes may occur.
Other unspecified consequences could manifest.

Technical Details of CVE-2017-16796

SWFTools 0.9.2's vulnerability can be further understood through technical details.

Vulnerability Description

The png_load function in lib/png.c does not properly validate the return value of a realloc call, enabling attackers to exploit this weakness.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Versions: n/a

Exploitation Mechanism

The vulnerability can be exploited through vectors involving an IDAT tag in a manipulated PNG file.

Mitigation and Prevention

To address CVE-2017-16796, consider the following mitigation strategies:

Immediate Steps to Take

Apply security patches or updates provided by the vendor.
Avoid opening or processing untrusted PNG files.

Long-Term Security Practices

Regularly update software to the latest versions.
Implement network security measures to detect and block malicious activities.

Patching and Updates

Ensure that SWFTools 0.9.2 is updated with the latest patches to mitigate the vulnerability.