openSUSE Security Update: Security update for libxml2
______________________________________________________________________________

Announcement ID:    openSUSE-SU-2018:3107-1
Rating:             moderate
References:         #1088279 #1088601 #1102046 #1105166 
Cross-References:   CVE-2017-18258 CVE-2018-14404 CVE-2018-14567
                    CVE-2018-9251
Affected Products:
                    openSUSE Leap 42.3
______________________________________________________________________________

   An update that fixes four vulnerabilities is now available.

Description:

   This update for libxml2 fixes the following security issues:

   - CVE-2018-9251: The xz_decomp function allowed remote attackers to cause
     a denial of service (infinite loop) via a crafted XML file that triggers
     LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint (bsc#1088279).
   - CVE-2018-14567: Prevent denial of service (infinite loop) via a crafted
     XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint
     (bsc#1105166).
   - CVE-2018-14404: Prevent NULL pointer dereference in the
     xmlXPathCompOpEval() function when parsing an invalid XPath expression
     in the XPATH_OP_AND or XPATH_OP_OR case leading to a denial of service
     attack (bsc#1102046).
   - CVE-2017-18258: The xz_head function allowed remote attackers to cause a
     denial of service (memory consumption) via a crafted LZMA file, because
     the decoder functionality did not restrict memory usage to what is
     required for a legitimate file (bsc#1088601).

   This update was imported from the SUSE:SLE-12-SP2:Update update project.


Patch Instructions:

   To install this openSUSE Security Update use the SUSE recommended
 installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - openSUSE Leap 42.3:

      zypper in -t patch openSUSE-2018-1149=1



Package List:

   - openSUSE Leap 42.3 (i586 x86_64):

      libxml2-2-2.9.4-18.1
      libxml2-2-debuginfo-2.9.4-18.1
      libxml2-debugsource-2.9.4-18.1
      libxml2-devel-2.9.4-18.1
      libxml2-tools-2.9.4-18.1
      libxml2-tools-debuginfo-2.9.4-18.1
      python-libxml2-2.9.4-18.1
      python-libxml2-debuginfo-2.9.4-18.1
      python-libxml2-debugsource-2.9.4-18.1

   - openSUSE Leap 42.3 (x86_64):

      libxml2-2-32bit-2.9.4-18.1
      libxml2-2-debuginfo-32bit-2.9.4-18.1
      libxml2-devel-32bit-2.9.4-18.1

   - openSUSE Leap 42.3 (noarch):

      libxml2-doc-2.9.4-18.1


References:

   https://www.suse.com/security/cve/CVE-2017-18258.html
   https://www.suse.com/security/cve/CVE-2018-14404.html
   https://www.suse.com/security/cve/CVE-2018-14567.html
   https://www.suse.com/security/cve/CVE-2018-9251.html
   https://bugzilla.suse.com/1088279
   https://bugzilla.suse.com/1088601
   https://bugzilla.suse.com/1102046
   https://bugzilla.suse.com/1105166

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