ESB-2018.2923 - [Debian] libxml2: Denial of service - Remote with user interaction 2018-09-28

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

                               ESB-2018.2923
              [SECURITY] [DLA 1524-1] libxml2 security update
                             28 September 2018

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

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

Product:           libxml2
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-14567 CVE-2018-14404 CVE-2018-9251
                   CVE-2017-18258  

Reference:         ESB-2018.1777
                   ESB-2018.1765

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html

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Package        : libxml2
Version        : 2.9.1+dfsg1-5+deb8u7
CVE ID         : CVE-2017-18258 CVE-2018-9251 CVE-2018-14404
                  CVE-2018-14567


CVE-2018-14404
      Fix of a NULL pointer dereference which might result in a crash and
      thus in a denial of service.

CVE-2018-14567 and CVE-2018-9251
      Approvement in LZMA error handling which prevents an infinite loop.

CVE-2017-18258
      Limit available memory to 100MB to avoid exhaustive memory
      consumption by malicious files.


For Debian 8 "Jessie", these problems have been fixed in version
2.9.1+dfsg1-5+deb8u7.

We recommend that you upgrade your libxml2 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

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