USN-4986-4

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    USN-4986-4

    Published: 10 Jun 2021Last Modified: 29 Jun 2026

    Summary: rpcbind regression

    Details: USN-4986-1 fixed a vulnerability in rpcbind. The update caused a regression resulting in rpcbind crashing in certain environments. This update fixes the problem for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: It was discovered that rpcbind incorrectly handled certain large data sizes. A remote attacker could use this issue to cause rpcbind to consume resources, leading to a denial of service.

    References: https://ubuntu.com/security/notices/USN-4986-4, https://launchpad.net/bugs/1931507

    Affected packages

    Package

    Name: rpcbind

    Purl: pkg:deb/ubuntu/rpcbind?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.2.1-2ubuntu2.2+esm2

    Affected versions

    0.2.0-8.2ubuntu2
    0.2.1-2ubuntu1
    0.2.1-2ubuntu2.1
    0.2.1-2ubuntu2.2
    0.2.1-2ubuntu2.2+esm1

    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
    USN-4986-4 | CVE-DB