CLSA-2023-1689701258

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    CLSA-2023-1689701258

    Published: 18 Jul 2023Last Modified: 4 Jun 2026
    Upstream:
    CVE-2021-20230

    Summary: Fix CVE(s): CVE-2021-20230

    Details: * SECURITY UPDATE: Attacker bypasses redirection using unauthorized CA-signed certificate. - debian/patches/CVE-2021-20230.patch: Patch enhancing certificate verification process to prevent unauthorized redirection with CA-signed certificates by refining session data checks. - CVE-2021-20230 * Fix tests: - debian/patches/renew-cert-script.patch: Add script that re-generate expired test certs. * Repacked orig source tarball with renewed certs. * Removed no longer required patch, that mute tests with expired certificates.

    References: https://errata.cloudlinux.com/ubuntu18_04-els/CLSA-2023-1689701258

    Affected packages

    Package

    Name: stunnel4

    Purl: pkg:deb/tuxcare/stunnel4?distro=ubuntu-18.04

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3:5.44-1ubuntu3+tuxcare.els1

    Affected versions

    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
    CLSA-2023-1689701258 | CVE-DB