UBUNTU-CVE-2020-22284

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    UBUNTU-CVE-2020-22284

    Published: 22 Jul 2021Last Modified: 18 Jun 2026
    Upstream:
    CVE-2020-22284
    Aliases:
    USN-8423-1

    Summary:

    Details: A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.

    References: https://ubuntu.com/security/CVE-2020-22284, https://savannah.nongnu.org/bugs/index.php?58554, https://www.cve.org/CVERecord?id=CVE-2020-22284, https://ubuntu.com/security/notices/USN-8423-1

    Affected packages

    Package

    Name: lwip

    Purl: pkg:deb/ubuntu/lwip?arch=source&distro=esm-apps%2Ffocal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.1.2+dfsg1-4ubuntu0.1~esm1

    Affected versions

    2.1.2-3
    2.1.2-5.1
    2.1.2+dfsg1-1
    2.1.2+dfsg1-4

    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-2020-22284 | CVE-DB