CVE-2023-45667 MEDIUM

CVE-2023-45667: Null pointer dereference because of an uninitialized variable in stb_image

Vendor Nothings
Product stb
Weakness CWE-476
Published October 20, 2023
Last update February 13, 2025
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 20, 2023 CVE published
February 13, 2025 Record updated