PSF-2016-1

    Dashboard / Vulnerabilities / PSF-2016-1

    PSF-2016-1

    Published: 7 Jun 2016Last Modified: 9 Oct 2025
    Aliases:
    CVE-2013-7440

    Summary: ssl.match_hostname() IDNA issue

    Details: The ssl.match_hostname function in CPython (aka Python) before 2.7.9 and 3.x before 3.3.3 does not properly handle wildcards in hostnames, which might allow man-in-the-middle attackers to spoof servers via a crafted certificate.

    References: https://bugs.python.org/issue17997, https://tools.ietf.org/html/rfc6125

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -72c98d3a761457a4f2b8054458b19f051dfb5886

    Affected versions

    2.5

    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
    PSF-2016-1 | CVE-DB