USN-4973-2

    Dashboard / Vulnerabilities / USN-4973-2

    USN-4973-2

    Published: 4 Oct 2021Last Modified: 22 Apr 2026

    Summary: python3.8 vulnerability

    Details: USN-4973-1 fixed this vulnerability previously, but it was re-introduced in python3.8 in focal because of the SRU in LP: #1928057. This update fixes the problem. Original advisory details: It was discovered that the Python stdlib ipaddress API incorrectly handled octal strings. A remote attacker could possibly use this issue to perform a wide variety of attacks, including bypassing certain access restrictions.

    References: https://ubuntu.com/security/notices/USN-4973-2, https://ubuntu.com/security/CVE-2021-29921, https://launchpad.net/bugs/1945240

    Affected packages

    Package

    Name: python3.8

    Purl: pkg:deb/ubuntu/[email protected]~20.04.1?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.8.10-0ubuntu1~20.04.1

    Affected versions

    3.8.0-1
    3.8.0-2
    3.8.0-3
    3.8.0-4
    3.8.0-5
    3.8.1-2ubuntu3
    3.8.2~rc1-1ubuntu1
    3.8.2-1
    3.8.2-1ubuntu1
    3.8.2-1ubuntu1.1
    3.8.2-1ubuntu1.2
    3.8.5-1~20.04
    3.8.5-1~20.04.2
    3.8.5-1~20.04.3
    3.8.10-0ubuntu1~20.04

    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-4973-2 | CVE-DB