USN-5806-2

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    USN-5806-2

    Published: 23 Jan 2023Last Modified: 27 Apr 2026

    Summary: ruby2.5, ruby3.0 vulnerability

    Details: USN-5806-1 fixed vulnerabilities in Ruby. This update fixes the problem for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.10. Original advisory details: Hiroshi Tokumaru discovered that Ruby did not properly handle certain user input for applications which generate HTTP responses using cgi gem. An attacker could possibly use this issue to maliciously modify the response a user would receive from a vulnerable application.

    References: https://ubuntu.com/security/notices/USN-5806-2, https://ubuntu.com/security/CVE-2021-33621

    Affected packages

    Package

    Name: ruby2.5

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.5.1-1ubuntu1.13

    Affected versions

    2.5.0~preview1-1ubuntu2
    2.5.0-4ubuntu1
    2.5.0-4ubuntu4
    2.5.0-5ubuntu1
    2.5.0-6ubuntu1
    2.5.1-1ubuntu1
    2.5.1-1ubuntu1.1
    2.5.1-1ubuntu1.2
    2.5.1-1ubuntu1.4
    2.5.1-1ubuntu1.5
    2.5.1-1ubuntu1.6
    2.5.1-1ubuntu1.7
    2.5.1-1ubuntu1.8
    2.5.1-1ubuntu1.9
    2.5.1-1ubuntu1.10
    2.5.1-1ubuntu1.11
    2.5.1-1ubuntu1.12

    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-5806-2 | CVE-DB