ESB-2018.1244 - [Win][UNIX/Linux][Debian] gunicorn: Provide misleading information - Remote/unauthenticated 2018-04-23

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1244
                       security update for gunicorn
                               23 April 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           gunicorn
Publisher:         Debian
Operating System:  Debian GNU/Linux 7
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1000164  

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2018/04/msg00022.html

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running gunicorn check for an updated version of the software for 
         their operating system.

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Package        : gunicorn
Version        : 0.14.5-3+deb7u2
CVE ID         : CVE-2018-1000164
Debian Bug     : #896548

It was discovered that there was an issue in the gunicorn HTTP server for
Python applicatons where CRLF sequences could result in an attacker tricking
the server into returning arbitrary headers.

For more information and background, please see:

  https://epadillas.github.io/2018/04/02/http-header-splitting-in-gunicorn-19.4.5

For Debian 7 "Wheezy", this issue has been fixed in gunicorn version
0.14.5-3+deb7u2.

We recommend that you upgrade your gunicorn packages.


Regards,

- - -- 
      ,''`.
     : :'  :     Chris Lamb
     `. `'`      lamby@debian.org / chris-lamb.co.uk
       `-

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