ESB-2017.2871 - [SUSE] kvm: Multiple vulnerabilities 2017-11-13

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2871
               SUSE Security Update: Security update for kvm
                             13 November 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kvm
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account      
                   Increased Privileges            -- Existing Account      
                   Denial of Service               -- Remote/Unauthenticated
                   Access Confidential Data        -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-15289 CVE-2017-15038 CVE-2017-14167
                   CVE-2017-13672 CVE-2017-11434 CVE-2017-11334
                   CVE-2017-10806 CVE-2017-10664 CVE-2017-9503
                   CVE-2017-9375 CVE-2017-9373 CVE-2017-9330
                   CVE-2017-8309 CVE-2017-8086 CVE-2017-7980
                   CVE-2017-7718 CVE-2017-7493 CVE-2017-7471
                   CVE-2017-6505 CVE-2017-5973 CVE-2017-5579
                   CVE-2016-9603 CVE-2016-9602 

Reference:         ESB-2017.2853
                   ESB-2017.2486
                   ESB-2017.2322
                   ESB-2017.0627
                   ESB-2017.0533

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2017/suse-su-20172963-1.html

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   SUSE Security Update: Security update for kvm
______________________________________________________________________________

Announcement ID:    SUSE-SU-2017:2963-1
Rating:             important
References:         #1020427 #1021741 #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 
Cross-References:   CVE-2016-9602 CVE-2016-9603 CVE-2017-10664
                    CVE-2017-10806 CVE-2017-11334 CVE-2017-11434
                    CVE-2017-13672 CVE-2017-14167 CVE-2017-15038
                    CVE-2017-15289 CVE-2017-5579 CVE-2017-5973
                    CVE-2017-6505 CVE-2017-7471 CVE-2017-7493
                    CVE-2017-7718 CVE-2017-7980 CVE-2017-8086
                    CVE-2017-8309 CVE-2017-9330 CVE-2017-9373
                    CVE-2017-9375 CVE-2017-9503
Affected Products:
                    SUSE Linux Enterprise Server 11-SP4
______________________________________________________________________________

   An update that solves 23 vulnerabilities and has 6 fixes is
   now available.

Description:

   This update for kvm fixes several issues.

   These security issues were fixed:

   - 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)
   - Privilege escalation in TCG mode (bsc#1030624)

   These non-security issues were fixed:

   - bsc#1038396: Fixed 12 tempest tests
   - bsc#1045035: Fixed regression introduced by previous virtfs security
     fixes
   - 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


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-SP4:

      zypper in -t patch slessp4-kvm-13342=1

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


Package List:

   - SUSE Linux Enterprise Server 11-SP4 (i586 s390x x86_64):

      kvm-1.4.2-60.3.1


References:

   https://www.suse.com/security/cve/CVE-2016-9602.html
   https://www.suse.com/security/cve/CVE-2016-9603.html
   https://www.suse.com/security/cve/CVE-2017-10664.html
   https://www.suse.com/security/cve/CVE-2017-10806.html
   https://www.suse.com/security/cve/CVE-2017-11334.html
   https://www.suse.com/security/cve/CVE-2017-11434.html
   https://www.suse.com/security/cve/CVE-2017-13672.html
   https://www.suse.com/security/cve/CVE-2017-14167.html
   https://www.suse.com/security/cve/CVE-2017-15038.html
   https://www.suse.com/security/cve/CVE-2017-15289.html
   https://www.suse.com/security/cve/CVE-2017-5579.html
   https://www.suse.com/security/cve/CVE-2017-5973.html
   https://www.suse.com/security/cve/CVE-2017-6505.html
   https://www.suse.com/security/cve/CVE-2017-7471.html
   https://www.suse.com/security/cve/CVE-2017-7493.html
   https://www.suse.com/security/cve/CVE-2017-7718.html
   https://www.suse.com/security/cve/CVE-2017-7980.html
   https://www.suse.com/security/cve/CVE-2017-8086.html
   https://www.suse.com/security/cve/CVE-2017-8309.html
   https://www.suse.com/security/cve/CVE-2017-9330.html
   https://www.suse.com/security/cve/CVE-2017-9373.html
   https://www.suse.com/security/cve/CVE-2017-9375.html
   https://www.suse.com/security/cve/CVE-2017-9503.html
   https://bugzilla.suse.com/1020427
   https://bugzilla.suse.com/1021741
   https://bugzilla.suse.com/1025109
   https://bugzilla.suse.com/1028184
   https://bugzilla.suse.com/1028656
   https://bugzilla.suse.com/1030624
   https://bugzilla.suse.com/1031051
   https://bugzilla.suse.com/1034044
   https://bugzilla.suse.com/1034866
   https://bugzilla.suse.com/1034908
   https://bugzilla.suse.com/1035406
   https://bugzilla.suse.com/1035950
   https://bugzilla.suse.com/1037242
   https://bugzilla.suse.com/1038396
   https://bugzilla.suse.com/1039495
   https://bugzilla.suse.com/1042159
   https://bugzilla.suse.com/1042800
   https://bugzilla.suse.com/1042801
   https://bugzilla.suse.com/1043296
   https://bugzilla.suse.com/1045035
   https://bugzilla.suse.com/1046636
   https://bugzilla.suse.com/1047674
   https://bugzilla.suse.com/1048902
   https://bugzilla.suse.com/1049381
   https://bugzilla.suse.com/1049785
   https://bugzilla.suse.com/1056334
   https://bugzilla.suse.com/1057585
   https://bugzilla.suse.com/1062069
   https://bugzilla.suse.com/1063122

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