UBUNTU-CVE-2021-3909

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    UBUNTU-CVE-2021-3909

    Published: 11 Nov 2021Last Modified: 16 Jul 2025
    Upstream:
    CVE-2021-3909

    Summary:

    Details: OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRPKI wait forever. Specifically, the repository that OctoRPKI sends HTTP requests to will keep the connection open for a day before a response is returned, but does keep drip feeding new bytes to keep the connection alive.

    References: https://ubuntu.com/security/CVE-2021-3909, https://github.com/cloudflare/cfrpki/security/advisories/GHSA-8cvr-4rrf-f244, https://github.com/cloudflare/cfrpki/commit/71ac74e691dc791731f90b72710975414ecec1eb, https://github.com/cloudflare/cfrpki/commit/dbc038f83197edc1f3360ab35af193a1557063c6, https://www.cve.org/CVERecord?id=CVE-2021-3909

    Affected packages

    Package

    Name: cfrpki

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=jammy

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.4.2-1

    Affected versions

    1.2.2-1

    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-2021-3909 | CVE-DB