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    CVE-2021-40633

    A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers trigger an out of memory exception or denial of service via a gif format file.

    Published:Jun 14, 2022
    Last Modified:Nov 21, 2024
    EPS:Jun 14, 2022
    EPSS Score:0.0131
    CVSS Score:8.8

    Affected Products

    Vendor
    Giflib Project
    Product
    Giflib

    Exploits

    https://sourceforge.net/p/giflib/bugs/157/https://sourceforge.net/p/giflib/bugs/157/

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-26740 (CVSS 8.2) — Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the …
    CVE-2026-23868 (CVSS 5.1) — Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and inco…
    CVE-2024-45993 (CVSS 6.5) — Giflib Project v5.2.2 is vulnerable to a heap buffer overflow via gif2rgb.…
    CVE-2023-48161 (CVSS 7.1) — Buffer Overflow vulnerability in GifLib Project GifLib v.5.2.1 allows a local attacker to obtain sensitive inf…
    CVE-2023-39742 (CVSS 5.5) — giflib v5.2.1 was discovered to contain a segmentation fault via the component getarg.c.…
    CVE-2022-28506 (CVSS 5.5) — There is a heap-buffer-overflow in GIFLIB 5.2.1 function DumpScreen2RGB() in gif2rgb.c:298:45.…
    CVE-2020-23922 (CVSS 7.1) — An issue was discovered in giflib through 5.1.4. DumpScreen2RGB in gif2rgb.c has a heap-based buffer over-read…
    CVE-2019-15133 (CVSS 6.5) — In GIFLIB before 2019-02-16, a malformed GIF file triggers a divide-by-zero exception in the decoder function …
    CVE-2018-11489 (CVSS 8.8) — The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c i…
    CVE-2018-11490 (CVSS 8.8) — The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c i…

    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