UBUNTU-CVE-2023-28756

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    UBUNTU-CVE-2023-28756

    Published: 31 Mar 2023Last Modified: 20 May 2026
    Upstream:
    CVE-2023-28756
    Aliases:
    USN-6055-1
    USN-6055-2
    USN-6087-1

    Summary:

    Details: A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to Time objects. The fixed versions are 0.1.1 and 0.2.2.

    References: https://ubuntu.com/security/CVE-2023-28756, https://www.ruby-lang.org/en/news/2023/03/30/redos-in-time-cve-2023-28756/, https://www.ruby-lang.org/en/news/2022/12/25/ruby-3-2-0-released/, https://github.com/ruby/time/releases/, https://www.ruby-lang.org/en/downloads/releases/, https://github.com/ruby/ruby/commit/957bb7cb81995f26c671afce0ee50a5c660e540e, https://github.com/ruby/time/commit/3dce6f73d14f5fad6d9b302393fd02df48797b11, https://github.com/ruby/time/commit/b57db51f577875d3e896dcd2ef1dcaf97f23e943, https://ubuntu.com/security/notices/USN-6055-1, https://ubuntu.com/security/notices/USN-6055-2, https://ubuntu.com/security/notices/USN-6087-1, https://ubuntu.com/security/notices/USN-6181-1, https://www.cve.org/CVERecord?id=CVE-2023-28756

    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-2023-28756 | CVE-DB