CVE-2023-45663: Disclosure of uninitialized memory in stbi__tga_load in stb_image
First published: Fri Oct 20 2023(Updated: )
stb_image is a single file MIT licensed library for processing images. The stbi__getn function reads a specified number of bytes from context (typically a file) into the specified buffer. In case the file stream points to the end, it returns zero. There are two places where its return value is not checked: In the `stbi__hdr_load` function and in the `stbi__tga_load` function. The latter of the two is likely more exploitable as an attacker may also control the size of an uninitialized buffer.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nothings Stb Image.h | =2.28 |
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Reference Links
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1664
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L5936C10-L5936C20
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L7221
- https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NMXKOKPP4BKTNUTF5KSRDQAWOUILQZNO/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QVABVF4GEM6BYD5L4L64RCRSXUHY6LGN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UVQ7ONFH5GWLMXYEAJG32A3EUKUCEVCR/
Frequently Asked Questions
What is CVE-2023-45663?
CVE-2023-45663 refers to a vulnerability in the stb_image library that allows for the disclosure of uninitialized memory when processing TGA image files.
What is the severity of CVE-2023-45663?
CVE-2023-45663 has a severity rating of 5.3, which is considered medium.
What software is affected by CVE-2023-45663?
The Nothings Stb Image.h library version 2.28 is affected by CVE-2023-45663.
How does CVE-2023-45663 affect the stb_image library?
CVE-2023-45663 affects the stb_image library by allowing an attacker to access uninitialized memory when processing certain TGA image files.
Is there a fix for CVE-2023-45663?
Yes, the fix for CVE-2023-45663 is available in the latest version of the stb_image library. It is recommended to update to the latest version to mitigate the vulnerability.
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