MGASA-2015-0289

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    MGASA-2015-0289

    Published: 27 Jul 2015Last Modified: 16 Apr 2026
    Upstream:
    CVE-2015-3644

    Summary: Updated stunnel package fixes security vulnerability

    Details: Johan Olofsson discovered an authentication bypass vulnerability in Stunnel, a program designed to work as an universal SSL tunnel for network daemons. When Stunnel in server mode is used with the redirect option and certificate-based authentication is enabled with "verify = 2" or higher, then only the initial connection is redirected to the hosts specified with "redirect". This allows a remote attacker to bypass authentication (CVE-2015-3644).

    References: https://advisories.mageia.org/MGASA-2015-0289.html, https://bugs.mageia.org/show_bug.cgi?id=15891, https://www.stunnel.org/CVE-2015-3644.html, https://www.debian.org/security/2015/dsa-3299

    Affected packages

    Package

    Name: stunnel

    Purl: pkg:rpm/mageia/stunnel?arch=source&distro=mageia-5

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.03-4.1.mga5

    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