CVE-2019-5051 Explained : Impact and Mitigation

Version 2.0.4 of SDL2_image has a heap-based buffer overflow vulnerability that can be exploited while loading a PCX file. This vulnerability occurs due to the absence of an error handler, potentially allowing the execution of arbitrary code.

Understanding CVE-2019-5051

SDL2_image version 2.0.4 is affected by a heap-based buffer overflow vulnerability that can be triggered by a specially crafted PCX file.

What is CVE-2019-5051?

The vulnerability in SDL2_image version 2.0.4 allows for a heap-based buffer overflow during PCX file loading.
The absence of an error handler in the affected version can lead to potential arbitrary code execution.
Attackers can exploit this by providing a carefully crafted image file.

The Impact of CVE-2019-5051

CVSS Base Score: 8.8 (High)
Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Confidentiality, Integrity, and Availability Impact: High

Technical Details of CVE-2019-5051

SDL2_image 2.0.4 vulnerability details and affected systems.

Vulnerability Description

The vulnerability is a heap-based buffer overflow in SDL2_image version 2.0.4 when processing PCX files.

Affected Systems and Versions

Product: Simple DirectMedia
Version: Simple DirectMedia Layer SDL2_image 2.0.4

Exploitation Mechanism

The vulnerability can be exploited by providing a specifically crafted PCX file to trigger the buffer overflow.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-5051.

Immediate Steps to Take

Update SDL2_image to a non-vulnerable version.
Avoid opening PCX files from untrusted sources.
Implement network security measures to prevent unauthorized access.

Long-Term Security Practices

Regularly update software and apply security patches.
Conduct security training to educate users on identifying malicious files.

Patching and Updates

Check for security advisories from the vendor and apply recommended patches promptly.