USN-5020-1

    Dashboard / Vulnerabilities / USN-5020-1

    USN-5020-1

    Published: 21 Jul 2021Last Modified: 25 Jun 2026

    Summary: ruby2.3, ruby2.5, ruby2.7 vulnerabilities

    Details: It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2021-31799) It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to conduct port scans and service banner extractions. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-31810) It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to perform machine-in-the-middle attackers to bypass the TLS protection. (CVE-2021-32066)

    References: https://ubuntu.com/security/notices/USN-5020-1, https://ubuntu.com/security/CVE-2021-31799, https://ubuntu.com/security/CVE-2021-31810, https://ubuntu.com/security/CVE-2021-32066

    Affected packages

    Package

    Name: ruby2.3

    Purl: pkg:deb/ubuntu/ruby2.3?arch=source&distro=esm-infra%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.3.1-2~ubuntu16.04.16+esm1

    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

    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-5020-1 | CVE-DB