CVE-2023-45676

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    CVE-2023-45676

    Published: 20 Oct 2023Last Modified: 10 Jun 2026

    Summary: Multi-byte write heap buffer overflow in start_decoder in stb_vorbis

    Details: stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in `f->vendor[i] = get8_packet(f);`. The root cause is an integer overflow in `setup_malloc`. A sufficiently large value in the variable `sz` overflows with `sz+7` in and the negative value passes the maximum available memory buffer check. This issue may lead to code execution.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45676.json, https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L3656, https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_vorbis.c#L950-L960, https://nvd.nist.gov/vuln/detail/CVE-2023-45676, https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
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    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-45676 | CVE-DB