SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2019:0827-1
Rating:             important
References:         #1027519 #1056336 #1105528 #1108940 #1110924 
                    #1111007 #1111011 #1111014 #1112188 #1114423 
                    #1114988 #1115040 #1115045 #1115047 #1117756 
                    #1123157 #1126140 #1126141 #1126192 #1126195 
                    #1126196 #1126198 #1126201 #1127400 #1129623 
                    
Cross-References:   CVE-2017-13672 CVE-2018-10839 CVE-2018-17958
                    CVE-2018-17962 CVE-2018-17963 CVE-2018-18438
                    CVE-2018-18849 CVE-2018-19665 CVE-2018-19961
                    CVE-2018-19962 CVE-2018-19965 CVE-2018-19966
                    CVE-2018-19967 CVE-2019-6778 CVE-2019-9824
                   
Affected Products:
                    SUSE Linux Enterprise Server 12-LTSS
______________________________________________________________________________

   An update that solves 15 vulnerabilities and has 10 fixes
   is now available.

Description:

   This update for xen fixes the following issues:

   Security issues fixed:

   - CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp
     (bsc#1123157).
   - CVE-2017-13672: Fixed an out of bounds read access during display update
     (bsc#1056336).
   - Fixed an issue which could allow malicious or buggy guests with passed
     through PCI devices to  be able to escalate their privileges, crash the
     host, or access data belonging to other guests. Additionally memory
     leaks were also possible (bsc#1126140)
   - Fixed a race condition issue which could allow malicious PV guests to
     escalate their privilege to that
     of the hypervisor (bsc#1126141).
   - CVE-2018-18849: Fixed an out of bounds msg buffer access which could
     lead to denial of service (bsc#1114423).
   - Fixed an issue which could allow a malicious unprivileged guest
     userspace process to escalate its privilege to that of other userspace
     processes in the same guest and potentially thereby to that
     of the guest operating system (bsc#1126201).
   - CVE-2018-17958: Fixed an integer overflow leading to a buffer overflow
     in the rtl8139 component (bsc#1111007)
   - CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the
     host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)
   - CVE-2018-19665: Fixed an integer overflow resulting in memory corruption
     in various Bluetooth functions, allowing this to crash qemu process
     resulting in Denial of Service (DoS). (bsc#1117756).
   - CVE-2019-9824: Fixed an information leak in SLiRP networking
     implementation which could allow a user/process to read uninitialised
     stack memory contents (bsc#1129623).
   - CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient
     TLB flushing with AMD IOMMUs, which potentially allowed a guest to
     escalate its privileges, may cause a Denial of Service (DoS) affecting
     the entire host, or may be able to access data it is not supposed to
     access. (XSA-275) (bsc#1115040)
   - CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240,
     which conflicted with shadow paging and allowed a guest to cause Xen to
     crash, resulting in a Denial of Service (DoS) (XSA-280) (bsc#1115047).
   - CVE-2018-10839: Fixed an integer overflow leading to a buffer overflow
     in the ne2000 component (bsc#1110924).
   - CVE-2018-19965: Fixed an issue related to the INVPCID instruction in
     case non-canonical addresses are accessed, which may allow a guest to
     cause Xen to crash, resulting in a Denial of Service (DoS) affecting the
     entire host. (XSA-279) (bsc#1115045).
   - Fixed an issue which could allow malicious 64bit PV guests to cause a
     host crash (bsc#1127400).
   - Fixed an issue which could allow malicious PV guests may cause a host
     crash or gain access to data pertaining to other guests.Additionally,
     vulnerable configurations are likely to be unstable even in the absence
     of an attack (bsc#1126198).
   - Fixed multiple access violations introduced by XENMEM_exchange hypercall
     which could allow a single PV guest to leak arbitrary amounts of memory,
     leading to a denial of service (bsc#1126192).
   - CVE-2018-17963: Fixed an integer overflow in relation to large packet
     sizes, leading to a denial of service (DoS). (bsc#1111014).
   - Fixed an issue which could allow a malicious or buggy x86 PV guest
     kernels can mount a Denial of Service attack affecting the whole system
     (bsc#1126196).
   - Fixed an issue which could allow an untrusted PV domain with access to a
     physical device to DMA into its own pagetables leading to privilege
     escalation (bsc#1126195).
   - CVE-2018-17962: Fixed an integer overflow leading to a buffer overflow
     in the pcnet component (bsc#1111011)
   - CVE-2018-18438: Fixed an integer overflow in ccid_card_vscard_read
     function which could lead to memory corruption (bsc#1112188).

   Other issues fixed:

   - Upstream bug fixes (bsc#1027519)
   - Fixed an issue where XEN SLE12-SP1 domU hangs on SLE12-SP3 HV1108940
     (bsc#1108940).


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 12-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-2019-827=1



Package List:

   - SUSE Linux Enterprise Server 12-LTSS (x86_64):

      xen-4.4.4_40-22.77.1
      xen-debugsource-4.4.4_40-22.77.1
      xen-doc-html-4.4.4_40-22.77.1
      xen-kmp-default-4.4.4_40_k3.12.61_52.146-22.77.1
      xen-kmp-default-debuginfo-4.4.4_40_k3.12.61_52.146-22.77.1
      xen-libs-32bit-4.4.4_40-22.77.1
      xen-libs-4.4.4_40-22.77.1
      xen-libs-debuginfo-32bit-4.4.4_40-22.77.1
      xen-libs-debuginfo-4.4.4_40-22.77.1
      xen-tools-4.4.4_40-22.77.1
      xen-tools-debuginfo-4.4.4_40-22.77.1
      xen-tools-domU-4.4.4_40-22.77.1
      xen-tools-domU-debuginfo-4.4.4_40-22.77.1


References:

   https://www.suse.com/security/cve/CVE-2017-13672.html
   https://www.suse.com/security/cve/CVE-2018-10839.html
   https://www.suse.com/security/cve/CVE-2018-17958.html
   https://www.suse.com/security/cve/CVE-2018-17962.html
   https://www.suse.com/security/cve/CVE-2018-17963.html
   https://www.suse.com/security/cve/CVE-2018-18438.html
   https://www.suse.com/security/cve/CVE-2018-18849.html
   https://www.suse.com/security/cve/CVE-2018-19665.html
   https://www.suse.com/security/cve/CVE-2018-19961.html
   https://www.suse.com/security/cve/CVE-2018-19962.html
   https://www.suse.com/security/cve/CVE-2018-19965.html
   https://www.suse.com/security/cve/CVE-2018-19966.html
   https://www.suse.com/security/cve/CVE-2018-19967.html
   https://www.suse.com/security/cve/CVE-2019-6778.html
   https://www.suse.com/security/cve/CVE-2019-9824.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1056336
   https://bugzilla.suse.com/1105528
   https://bugzilla.suse.com/1108940
   https://bugzilla.suse.com/1110924
   https://bugzilla.suse.com/1111007
   https://bugzilla.suse.com/1111011
   https://bugzilla.suse.com/1111014
   https://bugzilla.suse.com/1112188
   https://bugzilla.suse.com/1114423
   https://bugzilla.suse.com/1114988
   https://bugzilla.suse.com/1115040
   https://bugzilla.suse.com/1115045
   https://bugzilla.suse.com/1115047
   https://bugzilla.suse.com/1117756
   https://bugzilla.suse.com/1123157
   https://bugzilla.suse.com/1126140
   https://bugzilla.suse.com/1126141
   https://bugzilla.suse.com/1126192
   https://bugzilla.suse.com/1126195
   https://bugzilla.suse.com/1126196
   https://bugzilla.suse.com/1126198
   https://bugzilla.suse.com/1126201
   https://bugzilla.suse.com/1127400
   https://bugzilla.suse.com/1129623

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