UBUNTU-CVE-2021-3468

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    UBUNTU-CVE-2021-3468

    Published: 2 Jun 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-3468

    Summary:

    Details: A flaw was found in avahi in versions 0.6 up to 0.8. The event used to signal the termination of the client connection on the avahi Unix socket is not correctly handled in the client_work function, allowing a local attacker to trigger an infinite loop. The highest threat from this vulnerability is to the availability of the avahi service, which becomes unresponsive after this flaw is triggered.

    References: https://ubuntu.com/security/CVE-2021-3468, https://ubuntu.com/security/notices/USN-5008-1, https://ubuntu.com/security/notices/USN-5008-2, https://www.cve.org/CVERecord?id=CVE-2021-3468

    Affected packages

    Package

    Name: avahi

    Purl: pkg:deb/ubuntu/[email protected]+esm1?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.6.31-4ubuntu1.3+esm1

    Affected versions

    0.6.31-2ubuntu4
    0.6.31-2ubuntu5
    0.6.31-3ubuntu1
    0.6.31-4ubuntu1
    0.6.31-4ubuntu1.1
    0.6.31-4ubuntu1.2
    0.6.31-4ubuntu1.3

    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-2021-3468 | CVE-DB