PYSEC-2021-877

    Dashboard / Vulnerabilities / PYSEC-2021-877

    PYSEC-2021-877

    Published: 26 Jul 2021Last Modified: 9 Oct 2025

    Summary:

    Details: An integer overflow in CrwMap::encode0x1810 of Exiv2 0.27.3 allows attackers to trigger a heap-based buffer overflow and cause a denial of service (DOS) via crafted metadata.

    References: https://github.com/Exiv2/exiv2/issues/1530, https://www.debian.org/security/2021/dsa-4958, https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMDT4PJB7P43WSOM3TRQIY3J33BAFVVE/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UYGDELIFFJWKUU7SO3QATCIXCZJERGAC/

    Affected packages

    Package

    Name: exiv2

    Purl: pkg:pypi/exiv2

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0.1

    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
    PYSEC-2021-877 | CVE-DB