Integer Overflow Vulnerability in SDL2_image Package Leading to Potential Code Execution
Summary
ALPINE-CVE-2019-5052: An exploitable integer overflow vulnerability exists when loading a PCX file in SDL2_image 2.0.4. Affects sdl2_image versions < 2.0.5-r0. Fixed in 2.0.5-r0. How to fix ↓
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Background
SDL2_image is a widely used library that facilitates the loading of various image formats in applications built with the SDL (Simple DirectMedia Layer) framework. It supports multiple image formats and is essential for rendering images in games and multimedia applications. However, a critical vulnerability has been identified in versions prior to 2.0.5-r0, which exposes users to security risks when handling specially crafted image files.
Vulnerability Detail
An exploitable integer overflow vulnerability exists in SDL2_image version 2.0.4 when loading a PCX file. This flaw arises from improper handling of image file data, allowing an attacker to craft a malicious file that triggers an integer overflow. The result is insufficient memory allocation, leading to a buffer overflow that can be exploited for arbitrary code execution. This vulnerability has a CVSS score of 8.8, indicating a high severity level, and can potentially compromise the integrity and confidentiality of the affected systems.
How To Fix
Minimum fixed version
2.0.5-r0
This is the first release that contains the fix.
sudo apk add --upgrade sdl2_imageTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updating is not feasible, consider validating and sanitizing all image files before processing them to mitigate the risk of exploitation. Additionally, avoid loading untrusted image files from unknown sources.
Conclusion
The integer overflow vulnerability in the SDL2_image package poses a significant risk to applications that utilize this library for image processing. It is crucial to update to the patched version to safeguard against potential exploits. Additionally, utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
See every vulnerability recorded for sdl2_image →
FAQ
The vulnerability is an integer overflow that can lead to a buffer overflow and potential code execution when processing specially crafted PCX files.
You can use Vulert, which monitors open-source vulnerabilities in your software using a manifest file like package-lock.json. Visit Vulert Scanner to check your application without any signup.
Failure to address this vulnerability may allow attackers to execute arbitrary code on your system, potentially leading to data breaches or system compromise.
Yes, version 2.0.5-r0 and later are safe as they contain the necessary patches to address this vulnerability.
Implement input validation and avoid processing untrusted image files as a temporary measure until you can update the package.
References
Related vulnerabilities
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