CVE-2017-17528 : Security Advisory and Response

ScummVM version 1.9.0 is vulnerable to a security issue that could allow remote attackers to perform argument-injection attacks.

Understanding CVE-2017-17528

What is CVE-2017-17528?

The vulnerability lies in the posix.cpp file within the ScummVM software, specifically in the backends/platform/sdl/posix/ directory. It arises from inadequate validation of strings before executing the program specified by the BROWSER environment variable.

The Impact of CVE-2017-17528

This vulnerability could potentially enable remote attackers to manipulate URLs and perform argument-injection attacks, compromising the security of the system.

Technical Details of CVE-2017-17528

Vulnerability Description

The issue in backends/platform/sdl/posix/posix.cpp in ScummVM 1.9.0 allows attackers to exploit the BROWSER environment variable, leading to argument-injection attacks via crafted URLs.

Affected Systems and Versions

Product: ScummVM
Version: 1.9.0

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the BROWSER environment variable to inject malicious arguments through URLs.

Mitigation and Prevention

Immediate Steps to Take

Update ScummVM to a patched version that addresses the vulnerability.
Avoid clicking on suspicious or untrusted URLs to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities.
Implement proper input validation mechanisms to ensure the integrity of user inputs.

Patching and Updates

Ensure timely installation of software updates and security patches to protect against potential exploits.