Mageia 2020-0083: python-waitress security update

    Date13 Feb 2020
    477
    Posted ByLinuxSecurity Advisories
    Updated python-waitress packages fix security vulnerabilities: If a front-end server does not parse header fields with an LF the same way as it does those with a CRLF it can lead to the front-end and the back-end server parsing the same HTTP message in two different ways.
    MGASA-2020-0083 - Updated python-waitress packages fix security vulnerabilities
    
    Publication date: 13 Feb 2020
    URL: https://advisories.mageia.org/MGASA-2020-0083.html
    Type: security
    Affected Mageia releases: 7
    CVE: CVE-2019-16785,
         CVE-2019-16786,
         CVE-2019-16789
    
    Updated python-waitress packages fix security vulnerabilities:
    
    If a front-end server does not parse header fields with an LF the same
    way as it does those with a CRLF it can lead to the front-end and the
    back-end server parsing the same HTTP message in two different ways.
    This can lead to a potential for HTTP request smuggling/splitting whereby
    Waitress may see two requests while the front-end server only sees a
    single HTTP message (CVE-2019-16785).
    
    Waitress through version 1.3.1 would parse the Transfer-Encoding header
    and only look for a single string value, if that value was not chunked
    it would fall through and use the Content-Length header instead. This
    could allow for Waitress to treat a single request as multiple requests
    in the case of HTTP pipelining (CVE-2019-16786).
    
    In Waitress through version 1.4.0, if a proxy server is used in front of
    waitress, an invalid request may be sent by an attacker that bypasses the
    front-end and is parsed differently by waitress leading to a potential for
    HTTP request smuggling. If a front-end server does HTTP pipelining to a
    backend Waitress server this could lead to HTTP request splitting which
    may lead to potential cache poisoning or unexpected information disclosure
    (CVE-2019-16789).
    
    References:
    - https://bugs.mageia.org/show_bug.cgi?id=26014
    - https://docs.pylonsproject.org/projects/waitress/en/latest/#security-fixes
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16785
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16786
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16789
    
    SRPMS:
    - 7/core/python-waitress-1.4.2-1.mga7
    
    You are not authorised to post comments.

    Comments powered by CComment

    LinuxSecurity Poll

    What do you think of the LinuxSecurity Privacy news articles?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/25-what-do-you-think-of-the-linuxsecurity-privacy-news-articles?task=poll.vote&format=json
    25
    radio
    [{"id":"90","title":"Love them!","votes":"29","type":"x","order":"1","pct":90.63,"resources":[]},{"id":"91","title":"I'm indifferent","votes":"2","type":"x","order":"2","pct":6.25,"resources":[]},{"id":"92","title":"Not interested in this topic","votes":"1","type":"x","order":"3","pct":3.13,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.