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    CVE-2023-45667

    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.

    Published:Oct 20, 2023
    Last Modified:Feb 13, 2025
    EPS:Oct 20, 2023
    EPSS Score:0.00103
    CVSS Score:5.3

    Affected Products

    Vendor
    Nothings
    Product
    Stb Image
    Vendor
    Nothings
    Product
    Stb Image.h

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-5185 (CVSS 1.9) — A security flaw has been discovered in Nothings stb_image up to 2.30. This affects the function stbi__gif_load…
    CVE-2023-45666 (CVSS 7.3) — stb_image is a single file MIT licensed library for processing images. It may look like `stbi__load_gif_main`…
    CVE-2023-45664 (CVSS 7.3) — stb_image is a single file MIT licensed library for processing images. A crafted image file can trigger `stbi_…
    CVE-2023-45663 (CVSS 5.3) — stb_image is a single file MIT licensed library for processing images. The stbi__getn function reads a specifi…
    CVE-2023-45662 (CVSS 6.5) — stb_image is a single file MIT licensed library for processing images. When `stbi_set_flip_vertically_on_load`…
    CVE-2023-45661 (CVSS 6.5) — stb_image is a single file MIT licensed library for processing images. A crafted image file may trigger out of…

    References

    https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1442-L1454
    https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1448
    https://lists.fedoraproject.org/archives/list/[email protected]/message/NMXKOKPP4BKTNUTF5KSRDQAWOUILQZNO/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/QVABVF4GEM6BYD5L4L64RCRSXUHY6LGN/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/UVQ7ONFH5GWLMXYEAJG32A3EUKUCEVCR/
    https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/
    https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1442-L1454
    https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1448
    https://lists.fedoraproject.org/archives/list/[email protected]/message/NMXKOKPP4BKTNUTF5KSRDQAWOUILQZNO/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/QVABVF4GEM6BYD5L4L64RCRSXUHY6LGN/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/UVQ7ONFH5GWLMXYEAJG32A3EUKUCEVCR/
    https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High