SUSE: 2019:0921-1 important: xen

    Date10 Apr 2019
    CategorySuSE
    457
    Posted ByLinuxSecurity Advisories
    An update that solves three vulnerabilities and has 9 fixes is now available.
    
       SUSE Security Update: Security update for xen
    ______________________________________________________________________________
    
    Announcement ID:    SUSE-SU-2019:0921-1
    Rating:             important
    References:         #1026236 #1114988 #1123157 #1126140 #1126141 
                        #1126192 #1126195 #1126196 #1126198 #1126201 
                        #1127400 #1129623 
    Cross-References:   CVE-2018-19967 CVE-2019-6778 CVE-2019-9824
                       
    Affected Products:
                        SUSE OpenStack Cloud 7
                        SUSE Linux Enterprise Server for SAP 12-SP2
                        SUSE Linux Enterprise Server 12-SP2-LTSS
                        SUSE Linux Enterprise Server 12-SP2-BCL
                        SUSE Enterprise Storage 4
    ______________________________________________________________________________
    
       An update that solves three vulnerabilities and has 9 fixes
       is now available.
    
    Description:
    
       This update for xen fixes the following issues:
    
       Security issues fixed:
    
       - 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).
       - 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).
       - 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-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp
         (bsc#1123157).
       - Fixed an issue which could allow malicious 64bit PV guests to cause a
         host crash (bsc#1127400).
       - 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-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-2018-19967: Fixed HLE constructs that allowed guests to lock up the
         host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)
    
       Other issue addressed:
    
       - Added Xen cmdline option "suse_vtsc_tolerance" to avoid TSC emulation
         for HVM domUs (bsc#1026236).
    
    
    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 OpenStack Cloud 7:
    
          zypper in -t patch SUSE-OpenStack-Cloud-7-2019-921=1
    
       - SUSE Linux Enterprise Server for SAP 12-SP2:
    
          zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-921=1
    
       - SUSE Linux Enterprise Server 12-SP2-LTSS:
    
          zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-921=1
    
       - SUSE Linux Enterprise Server 12-SP2-BCL:
    
          zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2019-921=1
    
       - SUSE Enterprise Storage 4:
    
          zypper in -t patch SUSE-Storage-4-2019-921=1
    
    
    
    Package List:
    
       - SUSE OpenStack Cloud 7 (x86_64):
    
          xen-4.7.6_06-43.48.1
          xen-debugsource-4.7.6_06-43.48.1
          xen-doc-html-4.7.6_06-43.48.1
          xen-libs-32bit-4.7.6_06-43.48.1
          xen-libs-4.7.6_06-43.48.1
          xen-libs-debuginfo-32bit-4.7.6_06-43.48.1
          xen-libs-debuginfo-4.7.6_06-43.48.1
          xen-tools-4.7.6_06-43.48.1
          xen-tools-debuginfo-4.7.6_06-43.48.1
          xen-tools-domU-4.7.6_06-43.48.1
          xen-tools-domU-debuginfo-4.7.6_06-43.48.1
    
       - SUSE Linux Enterprise Server for SAP 12-SP2 (x86_64):
    
          xen-4.7.6_06-43.48.1
          xen-debugsource-4.7.6_06-43.48.1
          xen-doc-html-4.7.6_06-43.48.1
          xen-libs-32bit-4.7.6_06-43.48.1
          xen-libs-4.7.6_06-43.48.1
          xen-libs-debuginfo-32bit-4.7.6_06-43.48.1
          xen-libs-debuginfo-4.7.6_06-43.48.1
          xen-tools-4.7.6_06-43.48.1
          xen-tools-debuginfo-4.7.6_06-43.48.1
          xen-tools-domU-4.7.6_06-43.48.1
          xen-tools-domU-debuginfo-4.7.6_06-43.48.1
    
       - SUSE Linux Enterprise Server 12-SP2-LTSS (x86_64):
    
          xen-4.7.6_06-43.48.1
          xen-debugsource-4.7.6_06-43.48.1
          xen-doc-html-4.7.6_06-43.48.1
          xen-libs-32bit-4.7.6_06-43.48.1
          xen-libs-4.7.6_06-43.48.1
          xen-libs-debuginfo-32bit-4.7.6_06-43.48.1
          xen-libs-debuginfo-4.7.6_06-43.48.1
          xen-tools-4.7.6_06-43.48.1
          xen-tools-debuginfo-4.7.6_06-43.48.1
          xen-tools-domU-4.7.6_06-43.48.1
          xen-tools-domU-debuginfo-4.7.6_06-43.48.1
    
       - SUSE Linux Enterprise Server 12-SP2-BCL (x86_64):
    
          xen-4.7.6_06-43.48.1
          xen-debugsource-4.7.6_06-43.48.1
          xen-doc-html-4.7.6_06-43.48.1
          xen-libs-32bit-4.7.6_06-43.48.1
          xen-libs-4.7.6_06-43.48.1
          xen-libs-debuginfo-32bit-4.7.6_06-43.48.1
          xen-libs-debuginfo-4.7.6_06-43.48.1
          xen-tools-4.7.6_06-43.48.1
          xen-tools-debuginfo-4.7.6_06-43.48.1
          xen-tools-domU-4.7.6_06-43.48.1
          xen-tools-domU-debuginfo-4.7.6_06-43.48.1
    
       - SUSE Enterprise Storage 4 (x86_64):
    
          xen-4.7.6_06-43.48.1
          xen-debugsource-4.7.6_06-43.48.1
          xen-doc-html-4.7.6_06-43.48.1
          xen-libs-32bit-4.7.6_06-43.48.1
          xen-libs-4.7.6_06-43.48.1
          xen-libs-debuginfo-32bit-4.7.6_06-43.48.1
          xen-libs-debuginfo-4.7.6_06-43.48.1
          xen-tools-4.7.6_06-43.48.1
          xen-tools-debuginfo-4.7.6_06-43.48.1
          xen-tools-domU-4.7.6_06-43.48.1
          xen-tools-domU-debuginfo-4.7.6_06-43.48.1
    
    
    References:
    
       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/1026236
       https://bugzilla.suse.com/1114988
       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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