Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2018:1203-1
Rating: important
References: #1083292 #1089152 #1089635 #1090820 #1090822 #1090823
Affected Products:
  • SUSE Linux Enterprise Server 11-SP3-LTSS
  • SUSE Linux Enterprise Point of Sale 11-SP3
  • SUSE Linux Enterprise Debuginfo 11-SP3

  • An update that solves four vulnerabilities and has two fixes is now available.

    Description:

    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).

    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-SP3-LTSS:
      zypper in -t patch slessp3-xen-13595=1
    • SUSE Linux Enterprise Point of Sale 11-SP3:
      zypper in -t patch sleposp3-xen-13595=1
    • SUSE Linux Enterprise Debuginfo 11-SP3:
      zypper in -t patch dbgsp3-xen-13595=1

    Package List:

    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586 x86_64):
      • xen-kmp-default-4.2.5_21_3.0.101_0.47.106.19-45.22.1
      • xen-libs-4.2.5_21-45.22.1
      • xen-tools-domU-4.2.5_21-45.22.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (x86_64):
      • xen-4.2.5_21-45.22.1
      • xen-doc-html-4.2.5_21-45.22.1
      • xen-doc-pdf-4.2.5_21-45.22.1
      • xen-libs-32bit-4.2.5_21-45.22.1
      • xen-tools-4.2.5_21-45.22.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586):
      • xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.19-45.22.1
    • SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
      • xen-kmp-default-4.2.5_21_3.0.101_0.47.106.19-45.22.1
      • xen-kmp-pae-4.2.5_21_3.0.101_0.47.106.19-45.22.1
      • xen-libs-4.2.5_21-45.22.1
      • xen-tools-domU-4.2.5_21-45.22.1
    • SUSE Linux Enterprise Debuginfo 11-SP3 (i586 x86_64):
      • xen-debuginfo-4.2.5_21-45.22.1
      • xen-debugsource-4.2.5_21-45.22.1

    References: