CVE-2017-17557 : Vulnerability Insights and Analysis

Foxit Reader and Foxit PhantomPDF versions prior to 9.1 are vulnerable to a heap-based buffer overflow when parsing BMP files. This can be exploited by attackers to execute code within the current process.

Understanding CVE-2017-17557

This CVE describes a vulnerability in Foxit Reader and Foxit PhantomPDF that allows for code execution through a buffer overflow.

What is CVE-2017-17557?

The vulnerability arises from improper validation of the biSize element in the BITMAPINFOHEADER record in BMP files, leading to a heap-based buffer overflow.

The Impact of CVE-2017-17557

Exploiting this vulnerability enables attackers to execute malicious code within the context of the affected process.

Technical Details of CVE-2017-17557

Foxit Reader and Foxit PhantomPDF versions prior to 9.1 are susceptible to a heap-based buffer overflow vulnerability.

Vulnerability Description

The flaw lies in the parsing of the BITMAPINFOHEADER record in BMP files due to inadequate validation of the biSize member.

Affected Systems and Versions

Products: Foxit Reader, Foxit PhantomPDF
Versions: Prior to 9.1

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a specially designed BMP file to trigger a buffer overflow, potentially leading to code execution.

Mitigation and Prevention

To address CVE-2017-17557, users should take immediate steps and adopt long-term security practices.

Immediate Steps to Take

Update Foxit Reader and Foxit PhantomPDF to version 9.1 or later.
Avoid opening BMP files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement robust endpoint protection solutions to detect and prevent buffer overflow attacks.

Patching and Updates

Foxit Software has released patches addressing this vulnerability. Users should ensure they have installed the latest updates to mitigate the risk of exploitation.