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  <DocumentTitle xml:lang="en">Security update for xen</DocumentTitle>
  <DocumentType>SUSE Patch</DocumentType>
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    <ContactDetails>security@suse.de</ContactDetails>
    <IssuingAuthority>SUSE Security Team</IssuingAuthority>
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      <ID>SUSE-SU-2018:1202-1</ID>
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    <Status>Final</Status>
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        <Number>1</Number>
        <Date>2018-05-10T10:43:03Z</Date>
        <Description>current</Description>
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  <DocumentNotes>
    <Note Title="Topic" Type="Summary" Ordinal="1" xml:lang="en">Security update for xen</Note>
    <Note Title="Details" Type="General" Ordinal="2" xml:lang="en">This update for xen fixes several issues.

These security issues were fixed:

- CVE-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820)
- Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy
  HVM guests from causing a hypervisor crash or potentially privilege
  escalation/information leaks (XSA-261, bsc#1090822)
- Prevent unbounded loop, induced by qemu allowing an attacker to permanently
  keep a physical CPU core busy (XSA-262, bsc#1090823)
- CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able
  to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction
  with specifying the target file as the backing file of a snapshot
  (bsc#1089152).
- CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service
  (out-of-bounds zero write and hypervisor crash) via unexpected INT 80
  processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635).
- CVE-2018-7550: The load_multiboot function allowed local guest OS users to
  execute arbitrary code on the host via a mh_load_end_addr value greater than
  mh_bss_end_addr, which triggers an out-of-bounds read or write memory access
  (bsc#1083292).
  </Note>
    <Note Title="Terms of Use" Type="Legal Disclaimer" Ordinal="3" xml:lang="en">The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).</Note>
    <Note Title="Patchnames" Type="Details" Ordinal="4" xml:lang="en">SUSE-OpenStack-Cloud-6-2018-839,SUSE-SLE-SAP-12-SP1-2018-839,SUSE-SLE-SERVER-12-SP1-2018-839</Note>
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  <DocumentDistribution xml:lang="en">Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0)</DocumentDistribution>
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      <Description>SUSE Security Ratings</Description>
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      <Description>SUSE Bug 1027519</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1083292</URL>
      <Description>SUSE Bug 1083292</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1089152</URL>
      <Description>SUSE Bug 1089152</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1089635</URL>
      <Description>SUSE Bug 1089635</Description>
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      <URL>https://bugzilla.suse.com/1090820</URL>
      <Description>SUSE Bug 1090820</Description>
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      <URL>https://bugzilla.suse.com/1090822</URL>
      <Description>SUSE Bug 1090822</Description>
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    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2018-8897/</URL>
      <Description>SUSE CVE CVE-2018-8897 page</Description>
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        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-tools-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-libs-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-tools-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-libs-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-tools-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>moderate</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>1.9</BaseScoreV2>
        <VectorV2>AV:L/AC:M/Au:N/C:P/I:N/A:N</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>5.6</BaseScoreV3>
        <VectorV3>CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N</VectorV3>
      </ScoreSetV3>
    </CVSSScoreSets>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2018/suse-su-20181202-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2018-10472.html</URL>
        <Description>CVE-2018-10472</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1089152</URL>
        <Description>SUSE Bug 1089152</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="3">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS users to execute arbitrary code on the QEMU host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access.</Note>
    </Notes>
    <CVE>CVE-2018-7550</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-tools-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-libs-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-tools-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-libs-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-tools-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>4.6</BaseScoreV2>
        <VectorV2>AV:L/AC:L/Au:N/C:P/I:P/A:P</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>8.1</BaseScoreV3>
        <VectorV3>CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H</VectorV3>
      </ScoreSetV3>
    </CVSSScoreSets>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2018/suse-su-20181202-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2018-7550.html</URL>
        <Description>CVE-2018-7550</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1083291</URL>
        <Description>SUSE Bug 1083291</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1083292</URL>
        <Description>SUSE Bug 1083292</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="4">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL &lt; 3, the debug exception is delivered after the transfer to CPL &lt; 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs.</Note>
    </Notes>
    <CVE>CVE-2018-8897</CVE>
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      <Status Type="Fixed">
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        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-libs-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-tools-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 12 SP1-LTSS:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-libs-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-tools-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server for SAP Applications 12 SP1:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-doc-html-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-kmp-default-4.5.5_24_k3.12.74_60.64.85-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-libs-32bit-4.5.5_24-22.46.1</ProductID>
        <ProductID>SUSE OpenStack Cloud 6:xen-libs-4.5.5_24-22.46.1</ProductID>
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        <ProductID>SUSE OpenStack Cloud 6:xen-tools-domU-4.5.5_24-22.46.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>7.2</BaseScoreV2>
        <VectorV2>AV:L/AC:L/Au:N/C:C/I:C/A:C</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>7</BaseScoreV3>
        <VectorV3>CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</VectorV3>
      </ScoreSetV3>
    </CVSSScoreSets>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2018/suse-su-20181202-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2018-8897.html</URL>
        <Description>CVE-2018-8897</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1087078</URL>
        <Description>SUSE Bug 1087078</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1087088</URL>
        <Description>SUSE Bug 1087088</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1090368</URL>
        <Description>SUSE Bug 1090368</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1090820</URL>
        <Description>SUSE Bug 1090820</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1090869</URL>
        <Description>SUSE Bug 1090869</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1092497</URL>
        <Description>SUSE Bug 1092497</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1093522</URL>
        <Description>SUSE Bug 1093522</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1093524</URL>
        <Description>SUSE Bug 1093524</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1098813</URL>
        <Description>SUSE Bug 1098813</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1100835</URL>
        <Description>SUSE Bug 1100835</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1115893</URL>
        <Description>SUSE Bug 1115893</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1178658</URL>
        <Description>SUSE Bug 1178658</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
</cvrfdoc>
