Critical Vulnerability in TIFF Package: Denial of Service Risk Due to Float Value Issue
Summary
ALPINE-CVE-2017-7596: LibTIFF 4.0.7 has an "outside the range of representable values of type float" undefined behavior issue, which might allow remote attackers to cause a denial of service (application crash) or possibly have unspecified ot... Affects tiff versions < 4.0.7-r2. Fixed in 4.0.7-r2. How to fix ↓
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Background
The TIFF package is a widely used library for handling Tagged Image File Format (TIFF) images. It is essential for applications that require image processing and manipulation. The library provides functionalities for reading, writing, and converting TIFF images, making it a critical component in various software solutions. However, the version 4.0.7 of the TIFF package has been identified to have a vulnerability that could lead to severe consequences if exploited.
Vulnerability Detail
LibTIFF version 4.0.7 contains an undefined behavior issue related to float values, specifically an 'outside the range of representable values of type float' error. This vulnerability can be exploited by remote attackers through crafted images, potentially leading to application crashes or other unspecified impacts. The vulnerability is classified under CVE-2017-7596 and has a CVSS score of 7.8, indicating a high severity level.
How To Fix
Minimum fixed version
4.0.7-r2
This is the first release that contains the fix.
sudo apk add --upgrade tiffTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, you can avoid processing untrusted TIFF images until the package is updated. This will help mitigate the risk of exploitation while you work on applying the necessary updates.
Conclusion
The TIFF package vulnerability (CVE-2017-7596) poses a significant risk to applications that utilize this library for image processing. It is crucial to update to the patched version 4.0.7-r2 to safeguard against potential denial of service attacks and other impacts. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
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FAQ
CVE-2017-7596 is a vulnerability in the LibTIFF library that can lead to denial of service or other impacts due to undefined behavior with float values.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The vulnerability can cause application crashes and may allow attackers to exploit the system in unspecified ways, leading to potential data loss or service disruption.
Yes, the patched version of the TIFF package is 4.0.7-r2. Updating to this version will resolve the vulnerability.
If immediate updates are not possible, avoid processing untrusted TIFF images to mitigate the risk of exploitation.
References
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