SUSE-SU-2021:14729-1: important: Security update for libxml2

Wed May 19 19:19:58 UTC 2021

   SUSE Security Update: Security update for libxml2
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:14729-1
Rating:             important
References:         #1159928 #1161517 #1161521 #1176179 #1185408 
                    #1185409 #1185410 #1185698 
Cross-References:   CVE-2014-0191 CVE-2019-19956 CVE-2019-20388
                    CVE-2020-24977 CVE-2020-7595 CVE-2021-3516
                    CVE-2021-3517 CVE-2021-3518 CVE-2021-3537

CVSS scores:
                    CVE-2019-19956 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2019-19956 (SUSE): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
                    CVE-2019-20388 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2019-20388 (SUSE): 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
                    CVE-2020-24977 (NVD) : 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
                    CVE-2020-24977 (SUSE): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
                    CVE-2020-7595 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2020-7595 (SUSE): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
                    CVE-2021-3516 (SUSE): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-3517 (SUSE): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-3518 (SUSE): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-3537 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:
                    SUSE Linux Enterprise Server 11-SP4-LTSS
                    SUSE Linux Enterprise Point of Sale 11-SP3
                    SUSE Linux Enterprise Debuginfo 11-SP4
                    SUSE Linux Enterprise Debuginfo 11-SP3
______________________________________________________________________________

   An update that fixes 9 vulnerabilities is now available.

Description:

   This update for libxml2 fixes the following issues:

   Security issues fixed:

   - CVE-2021-3537: NULL pointer dereference in
     valid.c:xmlValidBuildAContentModel (bsc#1185698)
   - CVE-2021-3518: Fixed a use after free in xinclude.c:xmlXIncludeDoProcess
     (bsc#1185408).
   - CVE-2021-3517: Fixed a heap based buffer overflow in
     entities.c:xmlEncodeEntitiesInternal (bsc#1185410).
   - CVE-2021-3516: Fixed a use after free in xmlEncodeEntitiesInternal() in
     entities.c (bsc#1185409)
   - CVE-2020-24977: Fixed a global-buffer-overflow in
     xmlEncodeEntitiesInternal (bsc#1176179).
   - CVE-2019-20388: Fixed a memory leak in xmlSchemaPreRun (bsc#1161521).
   - CVE-2020-7595: Fixed an infinite loop in an EOF situation (bsc#1161517).
   - CVE-2019-19956: Fixed a memory leak in
     xmlParseBalancedChunkMemoryRecover (bsc#1159928).

Patch Instructions:

   To install this SUSE 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:

   - SUSE Linux Enterprise Server 11-SP4-LTSS:

      zypper in -t patch slessp4-libxml2-14729=1

   - SUSE Linux Enterprise Point of Sale 11-SP3:

      zypper in -t patch sleposp3-libxml2-14729=1

   - SUSE Linux Enterprise Debuginfo 11-SP4:

      zypper in -t patch dbgsp4-libxml2-14729=1

   - SUSE Linux Enterprise Debuginfo 11-SP3:

      zypper in -t patch dbgsp3-libxml2-14729=1

Package List:

   - SUSE Linux Enterprise Server 11-SP4-LTSS (i586 ppc64 s390x x86_64):

      libxml2-2.7.6-0.77.36.1
      libxml2-doc-2.7.6-0.77.36.1
      libxml2-python-2.7.6-0.77.36.1

   - SUSE Linux Enterprise Server 11-SP4-LTSS (ppc64 s390x x86_64):

      libxml2-32bit-2.7.6-0.77.36.1

   - SUSE Linux Enterprise Point of Sale 11-SP3 (i586):

      libxml2-2.7.6-0.77.36.1
      libxml2-doc-2.7.6-0.77.36.1
      libxml2-python-2.7.6-0.77.36.1

   - SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ppc64 s390x x86_64):

      libxml2-debuginfo-2.7.6-0.77.36.1
      libxml2-debugsource-2.7.6-0.77.36.1
      libxml2-python-debuginfo-2.7.6-0.77.36.1
      libxml2-python-debugsource-2.7.6-0.77.36.1

   - SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64):

      libxml2-debuginfo-2.7.6-0.77.36.1
      libxml2-debugsource-2.7.6-0.77.36.1
      libxml2-python-debuginfo-2.7.6-0.77.36.1
      libxml2-python-debugsource-2.7.6-0.77.36.1

References:

   https://www.suse.com/security/cve/CVE-2014-0191.html
   https://www.suse.com/security/cve/CVE-2019-19956.html
   https://www.suse.com/security/cve/CVE-2019-20388.html
   https://www.suse.com/security/cve/CVE-2020-24977.html
   https://www.suse.com/security/cve/CVE-2020-7595.html
   https://www.suse.com/security/cve/CVE-2021-3516.html
   https://www.suse.com/security/cve/CVE-2021-3517.html
   https://www.suse.com/security/cve/CVE-2021-3518.html
   https://www.suse.com/security/cve/CVE-2021-3537.html
   https://bugzilla.suse.com/1159928
   https://bugzilla.suse.com/1161517
   https://bugzilla.suse.com/1161521
   https://bugzilla.suse.com/1176179
   https://bugzilla.suse.com/1185408
   https://bugzilla.suse.com/1185409
   https://bugzilla.suse.com/1185410
   https://bugzilla.suse.com/1185698