UBUNTU-CVE-2021-29623

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    UBUNTU-CVE-2021-29623

    Published: 13 May 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-29623
    Aliases:
    USN-4964-1

    Summary:

    Details: Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4.

    References: https://ubuntu.com/security/CVE-2021-29623, https://github.com/Exiv2/exiv2/pull/1627, https://github.com/Exiv2/exiv2/security/advisories/GHSA-6253-qjwm-3q4v, https://ubuntu.com/security/notices/USN-4964-1, https://www.cve.org/CVERecord?id=CVE-2021-29623

    Affected packages

    Package

    Name: exiv2

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.27.2-8ubuntu2.4

    Affected versions

    0.25-4ubuntu2

    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
    UBUNTU-CVE-2021-29623 | CVE-DB