UBUNTU-CVE-2021-36770

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    UBUNTU-CVE-2021-36770

    Published: 9 Aug 2021Last Modified: 20 May 2026
    Upstream:
    CVE-2021-36770
    Aliases:
    USN-5033-1

    Summary:

    Details: Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.

    References: https://ubuntu.com/security/CVE-2021-36770, https://ubuntu.com/security/notices/USN-5033-1, https://www.cve.org/CVERecord?id=CVE-2021-36770

    Affected packages

    Package

    Name: libencode-perl

    Purl: pkg:deb/ubuntu/libencode-perl?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.76-1

    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
    UBUNTU-CVE-2021-36770 | CVE-DB