UBUNTU-CVE-2021-22884

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-22884

    UBUNTU-CVE-2021-22884

    Published: 3 Mar 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-22884
    Aliases:
    USN-6418-1

    Summary:

    Details: Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to DNS rebinding attacks as the whitelist includes “localhost6”. When “localhost6” is not present in /etc/hosts, it is just an ordinary domain that is resolved via DNS, i.e., over network. If the attacker controls the victim's DNS server or can spoof its responses, the DNS rebinding protection can be bypassed by using the “localhost6” domain. As long as the attacker uses the “localhost6” domain, they can still apply the attack described in CVE-2018-7160.

    References: https://ubuntu.com/security/CVE-2021-22884, https://nodejs.org/en/blog/vulnerability/february-2021-security-releases/, https://hackerone.com/reports/1069487, https://ubuntu.com/security/notices/USN-6418-1, https://www.cve.org/CVERecord?id=CVE-2021-22884

    Affected packages

    Package

    Name: nodejs

    Purl: pkg:deb/ubuntu/[email protected]~dfsg-2ubuntu0.4+esm3?arch=source&distro=esm-apps/bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -8.10.0~dfsg-2ubuntu0.4+esm3

    Affected versions

    6.11.4~dfsg-1ubuntu1
    6.11.4~dfsg-1ubuntu2

    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-2021-22884 | CVE-DB