CVE-2021-36978

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    CVE-2021-36978

    Published: 20 Jul 2021Last Modified: 9 Jul 2026

    Summary:

    Details: QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.

    References: https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html, https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yaml, https://security.gentoo.org/glsa/202401-20, https://github.com/qpdf/qpdf/issues/492, https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262, https://github.com/qpdf/qpdf/commit/dc92574c10f3e2516ec6445b88c5d584f40df4e5

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 5462dfce3106ffcc9b866902773933adeb7a4d41
    Fixed -None

    Affected versions

    release-qpdf-10.0.4
    release-qpdf-10.0.3
    release-qpdf-10.0.2
    release-qpdf-10.0.1
    release-qpdf-10.0.0

    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
    CVE-2021-36978 | CVE-DB