UBUNTU-CVE-2021-41817

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-41817

    UBUNTU-CVE-2021-41817

    Published: 1 Jan 2022Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-41817
    Aliases:
    USN-5235-1

    Summary:

    Details: Date.parse in the date gem through 3.2.0 for Ruby allows ReDoS (regular expression Denial of Service) via a long string. The fixed versions are 3.2.1, 3.1.2, 3.0.2, and 2.0.1.

    References: https://ubuntu.com/security/CVE-2021-41817, https://www.ruby-lang.org/en/news/2021/11/15/date-parsing-method-regexp-dos-cve-2021-41817/, https://github.com/ruby/date/commit/3959accef8da5c128f8a8e2fd54e932a4fb253b0, https://github.com/ruby/date/commit/8f2d7a0c7e52cea8333824bd527822e5449ed83d, https://github.com/ruby/date/commit/376c65942bd1d81803f14d37351737df60ec4664, https://ubuntu.com/security/notices/USN-5235-1, https://www.cve.org/CVERecord?id=CVE-2021-41817

    Affected packages

    Package

    Name: ruby2.3

    Purl: pkg:deb/ubuntu/[email protected]~ubuntu16.04.16+esm2?arch=source&distro=esm-infra/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.3.1-2~ubuntu16.04.16+esm2

    Affected versions

    2.3.0-1
    2.3.0-2
    2.3.0-4ubuntu2
    2.3.0-4ubuntu3
    2.3.0-5ubuntu1
    2.3.1-2~16.04
    2.3.1-2~16.04.2
    2.3.1-2~16.04.4
    2.3.1-2~16.04.5
    2.3.1-2~16.04.6
    2.3.1-2~16.04.7
    2.3.1-2~16.04.9
    2.3.1-2~16.04.10
    2.3.1-2~16.04.11
    2.3.1-2~16.04.12
    2.3.1-2~ubuntu16.04.13
    2.3.1-2~ubuntu16.04.14
    2.3.1-2~ubuntu16.04.15
    2.3.1-2~ubuntu16.04.16
    2.3.1-2~ubuntu16.04.16+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
    UBUNTU-CVE-2021-41817 | CVE-DB