Bug 2246110 (CVE-2023-45667)

Summary:	CVE-2023-45667 stb: memory access violation
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:	2246112, 2246113, 2246114
Bug Blocks:

Description ybuenos 2023-10-25 13:10:48 UTC

stb_image is a single file MIT licensed library for processing images.

If `stbi__load_gif_main` in `stbi_load_gif_from_memory` fails it returns a null pointer and may keep the `z` variable uninitialized. In case the caller also sets the flip vertically flag, it continues and calls `stbi__vertical_flip_slices` with the null pointer result value and the uninitialized `z` value. This may result in a program crash.

https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1442-L1454
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1448
https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/

Comment 1 ybuenos 2023-10-25 13:11:32 UTC

Created assimp tracking bugs for this issue:

Affects: epel-8 [bug 2246114]


Created stb tracking bugs for this issue:

Affects: epel-all [bug 2246113]
Affects: fedora-all [bug 2246112]

Comment 2 Fedora Update System 2023-10-26 01:01:25 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.