CVE-2023-45661: Wild address read in stbi__gif_load_next in stb_image
First published: Fri Oct 20 2023(Updated: )
stb_image is a single file MIT licensed library for processing images. A crafted image file may trigger out of bounds memcpy read in `stbi__gif_load_next`. This happens because two_back points to a memory address lower than the start of the buffer out. This issue may be used to leak internal memory allocation information.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nothings Stb Image.h | =2.28 |
Remedy
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L6817
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Reference Links
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L6817
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L7021-L7022
- 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-2023-45661?
CVE-2023-45661 is a vulnerability in the stb_image library that allows an attacker to trigger a memory read out of bounds in the stbi__gif_load_next function.
What is the severity of CVE-2023-45661?
CVE-2023-45661 has a severity rating of 7.1 (high).
How does CVE-2023-45661 occur?
CVE-2023-45661 occurs because the two_back pointer points to a memory address lower than the start of the buffer out in the stbi__gif_load_next function.
Which software versions are affected by CVE-2023-45661?
The stb_image library versions 2.28 are affected by CVE-2023-45661.
Is there a fix for CVE-2023-45661?
Yes, a fix for CVE-2023-45661 is available. Please refer to the provided references for more information.
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