OracleVM 3.4 : Unbreakable / etc (OVMSA-2019-0056)

#
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2019-0056.
#

include('compat.inc');

if (description)
{
  script_id(131208);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/10");

  script_cve_id(
    "CVE-2017-18551",
    "CVE-2018-12207",
    "CVE-2019-11135",
    "CVE-2019-14835",
    "CVE-2019-15213",
    "CVE-2019-15215",
    "CVE-2019-15217",
    "CVE-2019-15916",
    "CVE-2019-16994",
    "CVE-2019-16995",
    "CVE-2019-17053",
    "CVE-2019-17055"
  );

  script_name(english:"OracleVM 3.4 : Unbreakable / etc (OVMSA-2019-0056)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OracleVM host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote OracleVM system is missing necessary patches to address
critical security updates :

  - ocfs2: protect extent tree in
    ocfs2_prepare_inode_for_write (Shuning Zhang) [Orabug:
    30036349]

  - ocfs2: direct-IO: protect get_blocks (Junxiao Bi)
    [Orabug: 30036349]

  - SUNRPC: Remove xprt_connect_status (Trond Myklebust)
    [Orabug: 30165838]

  - SUNRPC: Handle ENETDOWN errors (Trond Myklebust)
    [Orabug: 30165838]

  - vhost: make sure log_num < in_num (yongduan) [Orabug:
    30312787] (CVE-2019-14835)

  - vhost: block speculation of translated descriptors
    (Michael S. Tsirkin) [Orabug: 30312787] (CVE-2019-14835)

  - vhost: Fix Spectre V1 vulnerability (Jason Wang)
    [Orabug: 30312787]

  - array_index_nospec: Sanitize speculative array
    de-references (Dan Williams) [Orabug: 30312787]

  - net: hsr: fix memory leak in hsr_dev_finalize (Mao
    Wenan) [Orabug: 30444853] (CVE-2019-16995)

  - ieee802154: enforce CAP_NET_RAW for raw sockets (Ori
    Nimron) [Orabug: 30444946] (CVE-2019-17053)

  - mISDN: enforce CAP_NET_RAW for raw sockets (Ori Nimron)
    [Orabug: 30445158] (CVE-2019-17055)

  - net: sit: fix memory leak in sit_init_net (Mao Wenan)
    [Orabug: 30445305] (CVE-2019-16994)

  - media: dvb: usb: fix use after free in
    dvb_usb_device_exit (Oliver Neukum) [Orabug: 30490491]
    (CVE-2019-15213)

  - media: cpia2_usb: first wake up, then free in disconnect
    (Oliver Neukum) [Orabug: 30511741] (CVE-2019-15215)

  - media: usb:zr364xx:Fix KASAN:null-ptr-deref Read in
    zr364xx_vidioc_querycap (Vandana BN) [Orabug: 30532774]
    (CVE-2019-15217)

  - target: Propagate backend read-only to core_tpg_add_lun
    (Nicholas Bellinger) [Orabug: 30538419]

  - kvm: mmu: ITLB_MULTIHIT mitigation selection (Kanth
    Ghatraju) [Orabug: 30539766]

  - cpu/speculation: Uninline and export CPU mitigations
    helpers (Kanth Ghatraju) [Orabug: 30539766]

  - rds: Use correct conn when dropping connections due to
    cancel (H&aring kon Bugge) [Orabug: 30316058]

  - rds: ib: Optimize rds_ib_laddr_check (H&aring kon Bugge)
    [Orabug: 30327671]

  - rds: Bring loop-back peer down as well (H&aring kon
    Bugge) [Orabug: 30271704]

  - rds: ib: Avoid connect retry on loopback connections
    (H&aring kon Bugge) 

  - rds: ib: Qualify CM REQ duplicate detection with
    connection being up (H&aring kon Bugge) [Orabug:
    30062150]

  - rds: Further prioritize local loop-back connections
    (H&aring kon Bugge) 

  - rds: Fix initial zero delay when queuing re-connect work
    (H&aring kon Bugge) 

  - rds: Re-introduce separate work-queue for local
    connections (H&aring kon Bugge) [Orabug: 30062150]

  - rds: Re-factor and avoid superfluous queuing of shutdown
    work (H&aring kon Bugge) [Orabug: 29994551]

  - rds: ib: Flush ARP cache when connection attempt is
    rejected (H&aring kon Bugge) [Orabug: 29994550]

  - rds: ib: Fix incorrect setting of cp_reconnect_racing
    (H&aring kon Bugge) 

  - RDMA/cma: Make # CM retries configurable (H&aring kon
    Bugge) [Orabug: 29994555]

  - rds: Re-factor and avoid superfluous queuing of
    reconnect work (H&aring kon Bugge) [Orabug: 29994558]

  - rds: ib: Correct the cm_id compare commit (H&aring kon
    Bugge) [Orabug: 29994560]

  - rds: Increase entropy in hashing (H&aring kon Bugge)
    [Orabug: 29994561]

  - rds: ib: Resurrect the CQs instead of delete+create
    (H&aring kon Bugge) 

  - rds: Avoid queuing superfluous send and recv work
    (H&aring kon Bugge) 

  - x86/tsx: Add config options to set tsx=on|off|auto
    (Michal Hocko) [Orabug: 30517133] (CVE-2019-11135)

  - x86/speculation/taa: Add documentation for TSX Async
    Abort (Pawan Gupta) [Orabug: 30517133] (CVE-2019-11135)

  - x86/tsx: Add 'auto' option to the tsx= cmdline parameter
    (Pawan Gupta) [Orabug: 30517133] (CVE-2019-11135)

  - kvm/x86: Export MDS_NO=0 to guests when TSX is enabled
    (Pawan Gupta) [Orabug: 30517133] (CVE-2019-11135)

  - x86/speculation/taa: Add sysfs reporting for TSX Async
    Abort (Pawan Gupta) [Orabug: 30517133] (CVE-2019-11135)

  - x86/speculation/taa: Add mitigation for TSX Async Abort
    (Kanth Ghatraju) [Orabug: 30517133] (CVE-2019-11135)

  - x86/cpu: Add a 'tsx=' cmdline option with TSX disabled
    by default (Pawan Gupta) [Orabug: 30517133]
    (CVE-2019-11135)

  - x86/cpu: Add a helper function x86_read_arch_cap_msr
    (Pawan Gupta) [Orabug: 30517133] (CVE-2019-11135)

  - x86/msr: Add the IA32_TSX_CTRL MSR (Pawan Gupta)
    [Orabug: 30517133] (CVE-2019-11135)

  - kvm: x86: mmu: Recovery of shattered NX large pages
    (Junaid Shahid) [Orabug: 30517059] (CVE-2018-12207)

  - kvm: Add helper function for creating VM worker threads
    (Junaid Shahid) [Orabug: 30517059] (CVE-2018-12207)

  - kvm: mmu: ITLB_MULTIHIT mitigation (Paolo Bonzini)
    [Orabug: 30517059] (CVE-2018-12207)

  - KVM: x86: remove now unneeded hugepage gfn adjustment
    (Paolo Bonzini) [Orabug: 30517059] (CVE-2018-12207)

  - KVM: x86: make FNAME(fetch) and __direct_map more
    similar (Paolo Bonzini) [Orabug: 30517059]
    (CVE-2018-12207)

  - kvm: x86: Do not release the page inside mmu_set_spte
    (Junaid Shahid) [Orabug: 30517059] (CVE-2018-12207)

  - x86/cpu: Add Tremont to the cpu vulnerability whitelist
    (Pawan Gupta) [Orabug: 30517059] (CVE-2018-12207)

  - x86: Add ITLB_MULTIHIT bug infrastructure (Pawan Gupta)
    [Orabug: 30517059] (CVE-2018-12207)

  - KVM: x86: MMU: Move mapping_level_dirty_bitmap call in
    mapping_level (Takuya Yoshikawa) [Orabug: 30517059]
    (CVE-2018-12207)

  - Revert 'KVM: x86: use the fast way to invalidate all
    pages' (Sean Christopherson) [Orabug: 30517059]
    (CVE-2018-12207)

  - kvm: Convert kvm_lock to a mutex (Junaid Shahid)
    [Orabug: 30517059] (CVE-2018-12207)

  - KVM: x86: MMU: Simplify force_pt_level calculation code
    in FNAME(page_fault) (Takuya Yoshikawa) [Orabug:
    30517059] (CVE-2018-12207)

  - KVM: x86: MMU: Make force_pt_level bool (Takuya
    Yoshikawa) [Orabug: 30517059] (CVE-2018-12207)

  - KVM: x86: MMU: Remove unused parameter parent_pte from
    kvm_mmu_get_page (Takuya Yoshikawa) [Orabug: 30517059]
    (CVE-2018-12207)

  - KVM: x86: extend usage of RET_MMIO_PF_* constants (Paolo
    Bonzini) [Orabug: 30517059] (CVE-2018-12207)

  - KVM: x86: MMU: Make mmu_set_spte return emulate value
    (Takuya Yoshikawa) [Orabug: 30517059] (CVE-2018-12207)

  - KVM: x86: MMU: Move parent_pte handling from
    kvm_mmu_get_page to link_shadow_page (Takuya Yoshikawa)
    [Orabug: 30517059] (CVE-2018-12207)

  - KVM: x86: MMU: Move initialization of parent_ptes out
    from kvm_mmu_alloc_page (Takuya Yoshikawa) [Orabug:
    30517059] (CVE-2018-12207)

  - scsi: qla2xxx: Fix NULL pointer crash due to probe
    failure [Orabug: 30161119]

  - i2c: core-smbus: prevent stack corruption on read
    I2C_BLOCK_DATA (Jeremy Compostella) [Orabug: 30210503]
    (CVE-2017-18551)

  - scsi: qla2xxx: Ability to process multiple SGEs in
    Command SGL for CT passthrough commands. (Giridhar
    Malavali) [Orabug: 30256423]

  - net-sysfs: Fix mem leak in netdev_register_kobject
    (YueHaibing) [Orabug: 30350263] (CVE-2019-15916)

  - Drivers: hv: vmbus: add special crash handler (Vitaly
    Kuznetsov)");
  # https://oss.oracle.com/pipermail/oraclevm-errata/2019-November/000968.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c252002b");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel-uek / kernel-uek-firmware packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-14835");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/11/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:kernel-uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:vm:kernel-uek-firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"OracleVM Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleVM/release", "Host/OracleVM/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/OracleVM/release");
if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM");
if (! preg(pattern:"^OVS" + "3\.4" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.4", "OracleVM " + release);
if (!get_kb_item("Host/OracleVM/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "OracleVM", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

flag = 0;
if (rpm_check(release:"OVS3.4", reference:"kernel-uek-4.1.12-124.33.4.el6uek")) flag++;
if (rpm_check(release:"OVS3.4", reference:"kernel-uek-firmware-4.1.12-124.33.4.el6uek")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel-uek / kernel-uek-firmware");
}