UBUNTU-CVE-2021-33621

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-33621

    UBUNTU-CVE-2021-33621

    Published: 18 Nov 2022Last Modified: 20 May 2026
    Upstream:
    CVE-2021-33621
    Aliases:
    USN-5806-1
    USN-5806-2
    USN-5806-3

    Summary:

    Details: The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object.

    References: https://ubuntu.com/security/CVE-2021-33621, https://www.ruby-lang.org/en/news/2022/11/22/http-response-splitting-in-cgi-cve-2021-33621/, https://github.com/ruby/cgi/commit/64c5045c0a6b84fdb938a8465a0890e5f7162708, https://github.com/ruby/cgi/commit/b46d41c36380e04f6388970b5ef05c687f4d1819, https://ubuntu.com/security/notices/USN-5806-1, https://ubuntu.com/security/notices/USN-5806-2, https://ubuntu.com/security/notices/USN-5806-3, https://ubuntu.com/security/notices/USN-6181-1, https://www.cve.org/CVERecord?id=CVE-2021-33621

    Affected packages

    Package

    Name: jruby

    Purl: pkg:deb/ubuntu/jruby?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.5.6-5ubuntu1
    1.5.6-6
    1.5.6-7
    1.5.6-9+deb8u2build0.14.04.1~esm2

    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-2021-33621 | CVE-DB