Security update for xen

SUSE Security Update: Security update for xen
Announcement ID: SUSE-SU-2017:2339-1
Rating: important
References: #1046637 #1048920 #1049578 #1051787 #1051788 #1052686
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 fixes 6 vulnerabilities is now available.

    Description:

    This update for xen fixes the following issues:

    - CVE-2017-12855: Premature clearing of GTF_writing / GTF_reading lead to
    potentially leaking sensitive information (XSA-230, bsc#1052686).
    - CVE-2017-12135: Unbounded recursion in grant table code allowed a
    malicious guest to crash the host or potentially escalate
    privileges/leak information (XSA-226, bsc#1051787).
    - CVE-2017-12137: Incorrectly-aligned updates to pagetables allowed for
    privilege escalation (XSA-227, bsc#1051788).
    - CVE-2017-11334: The address_space_write_continue function in exec.c
    allowed local guest OS privileged users to cause a denial of service
    (out-of-bounds access and guest instance crash) by leveraging use of
    qemu_map_ram_ptr to access guest ram block area (bsc#1048920).
    - CVE-2017-11434: The dhcp_decode function in slirp/bootp.c allowed local
    guest OS users to cause a denial of service (out-of-bounds read) via a
    crafted DHCP
    options string (bsc#1049578).
    - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which allowed remote
    attackers to cause a denial of service (daemon crash) by disconnecting
    during a server-to-client reply attempt (bsc#1046637).

    Patch Instructions:

    To install this SUSE Security Update use YaST online_update.
    Alternatively you can run the command listed for your product:

    • SUSE Linux Enterprise Server 11-SP3-LTSS:
      zypper in -t patch slessp3-xen-13259=1
    • SUSE Linux Enterprise Point of Sale 11-SP3:
      zypper in -t patch sleposp3-xen-13259=1
    • SUSE Linux Enterprise Debuginfo 11-SP3:
      zypper in -t patch dbgsp3-xen-13259=1

    To bring your system up-to-date, use "zypper patch".

    Package List:

    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586 x86_64):
      • xen-kmp-default-4.2.5_21_3.0.101_0.47.105-45.5.1
      • xen-libs-4.2.5_21-45.5.1
      • xen-tools-domU-4.2.5_21-45.5.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (x86_64):
      • xen-4.2.5_21-45.5.1
      • xen-doc-html-4.2.5_21-45.5.1
      • xen-doc-pdf-4.2.5_21-45.5.1
      • xen-libs-32bit-4.2.5_21-45.5.1
      • xen-tools-4.2.5_21-45.5.1
    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586):
      • xen-kmp-pae-4.2.5_21_3.0.101_0.47.105-45.5.1
    • SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
      • xen-kmp-default-4.2.5_21_3.0.101_0.47.105-45.5.1
      • xen-kmp-pae-4.2.5_21_3.0.101_0.47.105-45.5.1
      • xen-libs-4.2.5_21-45.5.1
      • xen-tools-domU-4.2.5_21-45.5.1
    • SUSE Linux Enterprise Debuginfo 11-SP3 (i586 x86_64):
      • xen-debuginfo-4.2.5_21-45.5.1
      • xen-debugsource-4.2.5_21-45.5.1

    References: