ArchLinux: 201906-17: python: information disclosure

    Date 19 Jun 2019
    678
    Posted By LinuxSecurity Advisories
    The package python before version 3.7.3-1 is vulnerable to information disclosure.
    Arch Linux Security Advisory ASA-201906-17
    ==========================================
    
    Severity: High
    Date    : 2019-06-18
    CVE-ID  : CVE-2019-9636
    Package : python
    Type    : information disclosure
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-977
    
    Summary
    =======
    
    The package python before version 3.7.3-1 is vulnerable to information
    disclosure.
    
    Resolution
    ==========
    
    Upgrade to 3.7.3-1.
    
    # pacman -Syu "python>=3.7.3-1"
    
    The problem has been fixed upstream in version 3.7.3.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    Python 2.7.x through 2.7.16 and 3.x through 3.7.2 is affected by
    improper Handling of Unicode Encoding (with an incorrect netloc) during
    NFKC normalization. A specially crafted URL could be incorrectly parsed
    by urllib.parse.urlsplit and urllib.parse.urlparse to locate cookies or
    authentication data and send that information to a different host than
    when parsed correctly.
    
    Impact
    ======
    
    A remote attacker is able to use a specially crafted URL to locate and
    disclose cookies or authentication data.
    
    References
    ==========
    
    https://python-security.readthedocs.io/vuln/urlsplit-nfkc-normalization.html
    https://github.com/python/cpython/commit/daad2c482c91de32d8305abbccc76a5de8b3a8be
    https://github.com/python/cpython/commit/f61599b050c621386a3fc6bc480359e2d3bb93de
    https://security.archlinux.org/CVE-2019-9636
    
    

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