Security update for kvm

SUSE Security Update: Security update for kvm
Announcement ID: SUSE-SU-2017:3084-1
Rating: important
References: #1013285 #1014109 #1014111 #1014702 #1015048 #1016779 #1020427 #1021129 #1021741 #1023004 #1023053 #1023907 #1024972 #1025109 #1028184 #1028656 #1030624 #1031051 #1034044 #1034866 #1034908 #1035406 #1035950 #1037242 #1038396 #1039495 #1042159 #1042800 #1042801 #1043296 #1045035 #1046636 #1047674 #1048902 #1049381 #1049785 #1056334 #1057585 #1062069 #1063122
Affected Products:
  • SUSE Linux Enterprise Server 11-SP3-LTSS
  • SUSE Linux Enterprise Point of Sale 11-SP3

  • An update that solves 33 vulnerabilities and has 7 fixes is now available.

    Description:


    This update for kvm fixes several issues.

    These security issues were fixed:

    - CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the bitblit copy routine
    cirrus_bitblt_cputovideo failed to check the memory region, allowing for
    an out-of-bounds write that allows for privilege escalation (bsc#1024972)
    - CVE-2017-2615: An error in the bitblt copy operation could have allowed
    a malicious guest administrator to cause an out of bounds memory access,
    possibly leading to information disclosure or privilege escalation
    (bsc#1023004)
    - CVE-2016-9776: The ColdFire Fast Ethernet Controller emulator support
    was vulnerable to an infinite loop issue while receiving packets in
    'mcf_fec_receive'. A privileged user/process inside guest could have
    used this issue to crash the Qemu process on the host leading to DoS
    (bsc#1013285)
    - CVE-2016-9911: The USB EHCI Emulation support was vulnerable to a memory
    leakage issue while processing packet data in 'ehci_init_transfer'. A
    guest user/process could have used this issue to leak host memory,
    resulting in DoS for the host (bsc#1014111)
    - CVE-2016-9907: The USB redirector usb-guest support was vulnerable to a
    memory leakage flaw when destroying the USB redirector in
    'usbredir_handle_destroy'. A guest user/process could have used this
    issue to leak host memory, resulting in DoS for a host (bsc#1014109)
    - CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support was vulnerable
    to a divide by zero issue while copying VGA data. A privileged user
    inside guest could have used this flaw to crash the process instance on
    the host, resulting in DoS (bsc#1014702)
    - CVE-2016-9922: The Cirrus CLGD 54xx VGA Emulator support was vulnerable
    to a divide by zero issue while copying VGA data. A privileged user
    inside guest could have used this flaw to crash the process instance on
    the host, resulting in DoS (bsc#1014702)
    - CVE-2017-5898: The CCID Card device emulator support was vulnerable to
    an integer overflow allowing a privileged user inside the guest to crash
    the Qemu process resulting in DoS (bnc#1023907)
    - CVE-2016-10155: The virtual hardware watchdog 'wdt_i6300esb' was
    vulnerable to a memory leakage issue allowing a privileged user to cause
    a DoS and/or potentially crash the Qemu process on the host (bsc#1021129)
    - CVE-2017-5856: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation
    support was vulnerable to a memory leakage issue allowing a privileged
    user to leak host memory resulting in DoS (bsc#1023053)
    - CVE-2016-9602: The VirtFS host directory sharing via Plan 9 File
    System(9pfs) support was vulnerable to an improper link following issue
    which allowed a privileged user inside guest to access host file system
    beyond the shared folder and potentially escalating their privileges on
    a host (bsc#1020427)
    - CVE-2016-9603: A privileged user within the guest VM could have caused a
    heap overflow in the device model process, potentially escalating their
    privileges to that of the device model process (bsc#1028656)
    - 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#1046636)
    - CVE-2017-10806: Stack-based buffer overflow allowed local guest OS users
    to cause a denial of service (QEMU process crash) via vectors related to
    logging debug messages (bsc#1047674)
    - CVE-2017-11334: The address_space_write_continue function 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#1048902)
    - 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#1049381)
    - CVE-2017-13672: The VGA display emulator support allowed local guest OS
    privileged users to cause a denial of service (out-of-bounds read and
    QEMU process crash) via vectors involving display update (bsc#1056334)
    - CVE-2017-14167: Integer overflow in the load_multiboot function allowed
    local guest OS users to execute arbitrary code on the host via crafted
    multiboot header address values, which trigger an out-of-bounds write
    (bsc#1057585)
    - CVE-2017-15038: Race condition in the v9fs_xattrwalk function local
    guest OS users to obtain sensitive information from host heap memory via
    vectors related to reading extended attributes (bsc#1062069)
    - CVE-2017-15289: The mode4and5 write functions allowed local OS guest
    privileged users to cause a denial of service (out-of-bounds write
    access and Qemu process crash) via vectors related to dst calculation
    (bsc#1063122)
    - CVE-2017-5579: The 16550A UART serial device emulation support was
    vulnerable to a memory leakage issue allowing a privileged user to cause
    a DoS and/or potentially crash the Qemu process on the host (bsc#1021741)
    - CVE-2017-5973: A infinite loop while doing control transfer in
    xhci_kick_epctx allowed privileged user inside the guest to crash the
    host process resulting in DoS (bsc#1025109)
    - CVE-2017-6505: The ohci_service_ed_list function allowed local guest OS
    users to cause a denial of service (infinite loop) via vectors involving
    the number of link endpoint list descriptors (bsc#1028184)
    - CVE-2017-7471: The VirtFS host directory sharing via Plan 9 File
    System(9pfs) support was vulnerable to an improper access control issue
    which allowed a privileged user inside guest to access host file system
    beyond the shared folder and potentially escalating their privileges on
    a host (bsc#1034866)
    - CVE-2017-7493: The VirtFS, host directory sharing via Plan 9 File
    System(9pfs) support, was vulnerable to an improper access control
    issue. It could occur while accessing virtfs metadata files in
    mapped-file security mode. A guest user could have used this flaw to
    escalate their privileges inside guest (bsc#1039495)
    - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local guest OS
    privileged users to cause a denial of service (out-of-bounds read and
    QEMU process crash) via vectors related to copying VGA data via the
    cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_ functions
    (bsc#1034908)
    - CVE-2017-7980: An out-of-bounds r/w access issues in the Cirrus CLGD
    54xx VGA Emulator support allowed privileged user inside guest to use
    this flaw to crash the Qemu process resulting in DoS or potentially
    execute arbitrary code on a host with privileges of Qemu process on the
    host (bsc#1035406)
    - CVE-2017-8086: A memory leak in the v9fs_list_xattr function in
    hw/9pfs/9p-xattr.c allowed local guest OS privileged users to cause a
    denial of service (memory consumption) via vectors involving the
    orig_value variable (bsc#1035950)
    - CVE-2017-8309: Memory leak in the audio/audio.c allowed remote attackers
    to cause a denial of service (memory consumption) by repeatedly starting
    and stopping audio capture (bsc#1037242)
    - CVE-2017-9330: USB OHCI Emulation in qemu allowed local guest OS users
    to cause a denial of service (infinite loop) by leveraging an incorrect
    return value (bsc#1042159)
    - CVE-2017-9373: The IDE AHCI Emulation support was vulnerable to a host
    memory leakage issue, which allowed a privileged user inside guest to
    leak host memory resulting in DoS (bsc#1042801)
    - CVE-2017-9375: The USB xHCI controller emulator support was vulnerable
    to an infinite recursive call loop issue, which allowed a privileged
    user inside guest to crash the Qemu process resulting in DoS
    (bsc#1042800)
    - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation
    support was vulnerable to a null pointer dereference issue which allowed
    a privileged user inside guest to crash the Qemu process on the host
    resulting in DoS (bsc#1043296)
    * Fix privilege escalation in TCG mode (bsc#1030624)

    These non-security issues were fixed:

    - bsc#1045035: Fixed regression introduced by previous virtfs security
    fixes
    - bsc#1038396: Fixed 12 tempest tests
    - bsc#1034044: Prevent KVM guests stuck when waiting for sg_io() completion
    - bsc#1031051: Prevent I/O errors when using pvmove with disk device=lun
    - bsc#1049785: Make virsh dump output readable by crash
    - bsc#1015048: Fixed virtio interface failure
    - bsc#1016779: Fixed graphical update errors introduced by previous
    security fix
    - Fixed various inaccuracies in cirrus vga device emulation

    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-kvm-13351=1
    • SUSE Linux Enterprise Point of Sale 11-SP3:
      zypper in -t patch sleposp3-kvm-13351=1

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

    Package List:

    • SUSE Linux Enterprise Server 11-SP3-LTSS (i586 s390x x86_64):
      • kvm-1.4.2-53.11.1
    • SUSE Linux Enterprise Point of Sale 11-SP3 (i586):
      • kvm-1.4.2-53.11.1

    References: