SUSE-SU-2020:1922-1: important: Security update for LibVNCServer

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for LibVNCServer
______________________________________________________________________________

Announcement ID:    SUSE-SU-2020:1922-1
Rating:             important
References:         #1173477 #1173691 #1173694 #1173700 #1173701 
                    #1173743 #1173874 #1173875 #1173876 #1173880 
                    
Cross-References:   CVE-2017-18922 CVE-2018-21247 CVE-2019-20839
                    CVE-2019-20840 CVE-2020-14397 CVE-2020-14398
                    CVE-2020-14399 CVE-2020-14400 CVE-2020-14401
                    CVE-2020-14402
Affected Products:
                    SUSE Linux Enterprise Workstation Extension 15-SP2
                    SUSE Linux Enterprise Workstation Extension 15-SP1
                    SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2
                    SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP1
______________________________________________________________________________

   An update that fixes 10 vulnerabilities is now available.

Description:

   This update for LibVNCServer fixes the following issues:

   - security update
   - added patches fix CVE-2018-21247 [bsc#1173874], uninitialized memory
     contents are vulnerable to Information leak
     + LibVNCServer-CVE-2018-21247.patch fix CVE-2019-20839 [bsc#1173875],
       buffer overflow in ConnectClientToUnixSock()
     + LibVNCServer-CVE-2019-20839.patch fix CVE-2019-20840 [bsc#1173876],
       unaligned accesses in hybiReadAndDecode can lead to denial of service
     + LibVNCServer-CVE-2019-20840.patch fix CVE-2020-14398 [bsc#1173880],
       improperly closed TCP connection causes an infinite loop in
       libvncclient/sockets.c
     + LibVNCServer-CVE-2020-14398.patch fix CVE-2020-14397 [bsc#1173700],
       NULL pointer dereference in libvncserver/rfbregion.c
     + LibVNCServer-CVE-2020-14397.patch fix CVE-2020-14399 [bsc#1173743],
       Byte-aligned data is accessed through uint32_t pointers in
       libvncclient/rfbproto.c.
     + LibVNCServer-CVE-2020-14399.patch fix CVE-2020-14400 [bsc#1173691],
       Byte-aligned data is accessed through uint16_t pointers in
       libvncserver/translate.c.
     + LibVNCServer-CVE-2020-14400.patch fix CVE-2020-14401 [bsc#1173694],
       potential integer overflows in libvncserver/scale.c
     + LibVNCServer-CVE-2020-14401.patch fix CVE-2020-14402 [bsc#1173701],
       out-of-bounds access via encodings.
     + LibVNCServer-CVE-2020-14402,14403,14404.patch fix CVE-2017-18922
       [bsc#1173477], preauth buffer overwrite


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 Workstation Extension 15-SP2:

      zypper in -t patch SUSE-SLE-Product-WE-15-SP2-2020-1922=1

   - SUSE Linux Enterprise Workstation Extension 15-SP1:

      zypper in -t patch SUSE-SLE-Product-WE-15-SP1-2020-1922=1

   - SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2:

      zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP2-2020-1922=1

   - SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP1:

      zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP1-2020-1922=1



Package List:

   - SUSE Linux Enterprise Workstation Extension 15-SP2 (x86_64):

      LibVNCServer-debugsource-0.9.10-4.22.1
      libvncclient0-0.9.10-4.22.1
      libvncclient0-debuginfo-0.9.10-4.22.1
      libvncserver0-0.9.10-4.22.1
      libvncserver0-debuginfo-0.9.10-4.22.1

   - SUSE Linux Enterprise Workstation Extension 15-SP1 (x86_64):

      LibVNCServer-debugsource-0.9.10-4.22.1
      libvncclient0-0.9.10-4.22.1
      libvncclient0-debuginfo-0.9.10-4.22.1

   - SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2 (aarch64 ppc64le s390x x86_64):

      LibVNCServer-debugsource-0.9.10-4.22.1
      libvncserver0-0.9.10-4.22.1
      libvncserver0-debuginfo-0.9.10-4.22.1

   - SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP1 (aarch64 ppc64le s390x x86_64):

      LibVNCServer-debugsource-0.9.10-4.22.1
      libvncserver0-0.9.10-4.22.1
      libvncserver0-debuginfo-0.9.10-4.22.1


References:

   https://www.suse.com/security/cve/CVE-2017-18922.html
   https://www.suse.com/security/cve/CVE-2018-21247.html
   https://www.suse.com/security/cve/CVE-2019-20839.html
   https://www.suse.com/security/cve/CVE-2019-20840.html
   https://www.suse.com/security/cve/CVE-2020-14397.html
   https://www.suse.com/security/cve/CVE-2020-14398.html
   https://www.suse.com/security/cve/CVE-2020-14399.html
   https://www.suse.com/security/cve/CVE-2020-14400.html
   https://www.suse.com/security/cve/CVE-2020-14401.html
   https://www.suse.com/security/cve/CVE-2020-14402.html
   https://bugzilla.suse.com/1173477
   https://bugzilla.suse.com/1173691
   https://bugzilla.suse.com/1173694
   https://bugzilla.suse.com/1173700
   https://bugzilla.suse.com/1173701
   https://bugzilla.suse.com/1173743
   https://bugzilla.suse.com/1173874
   https://bugzilla.suse.com/1173875
   https://bugzilla.suse.com/1173876
   https://bugzilla.suse.com/1173880