UBUNTU-CVE-2021-20193

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    UBUNTU-CVE-2021-20193

    Published: 26 Mar 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-20193
    Aliases:
    USN-5329-1

    Summary:

    Details: A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

    References: https://ubuntu.com/security/CVE-2021-20193, https://savannah.gnu.org/bugs/?59897, https://ubuntu.com/security/notices/USN-5329-1, https://www.cve.org/CVERecord?id=CVE-2021-20193

    Affected packages

    Package

    Name: tar

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.27.1-1ubuntu0.1+esm2

    Affected versions

    1.26+dfsg-8

    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-2021-20193 | CVE-DB