CVE-2017-7275 : What You Need to Know

A vulnerability, identified as CVE-2016-8862 and CVE-2016-8866, exists in the ReadPCXImage function within the pcx.c file of ImageMagick version 7.0.4.9. This vulnerability can be exploited by remote attackers to cause a denial of service on the affected application. The attack involves leveraging a specially crafted file, which triggers an attempted large memory allocation, leading to a crash of the application. It is important to note that this vulnerability exists due to an incomplete fix.

Understanding CVE-2017-7275

This section provides an overview of the CVE-2017-7275 vulnerability.

What is CVE-2017-7275?

The CVE-2017-7275 vulnerability is a flaw in the ReadPCXImage function of ImageMagick 7.0.4.9 that allows remote attackers to trigger a denial of service by causing a large memory allocation and application crash.

The Impact of CVE-2017-7275

The vulnerability can have the following impacts:

Remote attackers can exploit the flaw to crash the affected application.
Denial of service can occur due to the attempted large memory allocation.

Technical Details of CVE-2017-7275

This section delves into the technical aspects of CVE-2017-7275.

Vulnerability Description

The vulnerability in the ReadPCXImage function of ImageMagick 7.0.4.9 allows attackers to cause a denial of service by triggering a large memory allocation and application crash.

Affected Systems and Versions

Affected System: ImageMagick version 7.0.4.9
Affected Function: ReadPCXImage in pcx.c

Exploitation Mechanism

The vulnerability can be exploited by remote attackers using a specially crafted file to trigger the large memory allocation, leading to a crash of the application.

Mitigation and Prevention

This section outlines steps to mitigate and prevent the CVE-2017-7275 vulnerability.

Immediate Steps to Take

Update ImageMagick to a patched version that addresses the vulnerability.
Avoid opening files from untrusted sources.

Long-Term Security Practices

Regularly update software and apply security patches.
Implement network security measures to prevent remote attacks.

Patching and Updates

Ensure timely installation of security updates and patches for ImageMagick.