Bug 2246104 (CVE-2023-45663)

Summary: CVE-2023-45663 stb: memory access violations
Product: [Other] Security Response Reporter: ybuenos
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Bug Depends On: 2246106, 2246107, 2246108    
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Description ybuenos 2023-10-25 13:04:23 UTC 
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.

https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L5936C10-L5936C20
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L7221
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1664
https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/
Comment 1 ybuenos 2023-10-25 13:06:55 UTC 
Created assimp tracking bugs for this issue:

Affects: epel-8 [bug 2246108]


Created stb tracking bugs for this issue:

Affects: epel-all [bug 2246107]
Affects: fedora-all [bug 2246106]
Comment 2 Fedora Update System 2023-10-26 01:01:16 UTC 
FEDORA-2023-58af3a2eca has been pushed to the Fedora 40 stable repository.
If problem still persists, please make note of it in this bug report.