UBUNTU-CVE-2021-40491

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    UBUNTU-CVE-2021-40491

    Published: 3 Sept 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-40491
    Aliases:
    USN-5177-1

    Summary:

    Details: The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.

    References: https://ubuntu.com/security/CVE-2021-40491, https://lists.gnu.org/archive/html/bug-inetutils/2021-06/msg00002.html, https://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=58cb043b190fd04effdaea7c9403416b436e50dd, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993476, https://ubuntu.com/security/notices/USN-5177-1, https://www.cve.org/CVERecord?id=CVE-2021-40491

    Affected packages

    Package

    Name: inetutils

    Purl: pkg:deb/ubuntu/inetutils@2:1.9.2-1ubuntu0.1~esm1?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:1.9.2-1ubuntu0.1~esm1

    Affected versions

    2:1.9.1.306-0a482-1
    2:1.9.1.363-bbc1-1
    2:1.9.2-1

    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-2021-40491 | CVE-DB