Critical Double-Free Vulnerability in SDL2_image Package
Summary
ALPINE-CVE-2017-14449: A double-Free vulnerability exists in the XCF image rendering functionality of SDL2_image-2.0.2. Affects sdl2_image versions < 2.0.3-r0. Fixed in 2.0.3-r0. How to fix ↓
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Background
SDL2_image is an image loading library that extends the capabilities of the Simple DirectMedia Layer (SDL) by providing support for various image formats. It is widely used in multimedia applications and games to handle image rendering. However, a vulnerability has been identified in versions prior to 2.0.3-r0, which can lead to severe security issues if exploited.
Vulnerability Detail
A double-free vulnerability exists in the XCF image rendering functionality of SDL2_image version 2.0.2. This flaw allows an attacker to craft a specially designed XCF image that, when processed, can trigger a double-free situation. This can lead to memory corruption, potentially allowing an attacker to execute arbitrary code or crash the application. The vulnerability is classified with a CVSS score of 8.8, indicating a high severity level.
How To Fix
Minimum fixed version
2.0.3-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 you cannot update the package immediately, consider avoiding the use of XCF images in your application until the vulnerability is patched. Additionally, implement input validation to ensure that only trusted images are processed.
Conclusion
The SDL2_image package has a critical double-free vulnerability that can be exploited through specially crafted XCF images. It is essential to update to the patched version to mitigate risks. If immediate updates are not possible, consider workarounds to protect your application.
See every vulnerability recorded for sdl2_image →
FAQ
A double-free vulnerability occurs when a program attempts to free the same memory location more than once, which can lead to memory corruption and potential exploitation by attackers.
Exploiting this vulnerability can allow attackers to execute arbitrary code, potentially leading to unauthorized access, data breaches, or application crashes.
If your application uses SDL2_image version 2.0.2 or earlier and processes XCF images, it is at risk of this vulnerability.
If you cannot update the package, avoid processing XCF images and implement strict input validation to mitigate the risk.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just a manifest file like package-lock.json. You can also check if your application is affected by this vulnerability using the Vulert playground.
References
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