Vulnerabilities > CVE-2019-6974 - Use After Free vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K11186236.
#
# The text description of this plugin is (C) F5 Networks.
#

include("compat.inc");

if (description)
{
  script_id(132554);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/01");

  script_cve_id("CVE-2019-6974");

  script_name(english:"F5 Networks BIG-IP : Linux kernel KVM subsystem vulnerability (K11186236)");
  script_summary(english:"Checks the BIG-IP version.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote device is missing a vendor-supplied security patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"In the Linux kernel before 4.20.8, kvm_ioctl_create_device in
virt/kvm/kvm_main.c mishandles reference counting because of a race
condition, leading to a use-after-free. (CVE-2019-6974)

Impact

BIG-IP

An attacker may use this vulnerability to cause a vCMP guest to
crash,resulting in a denial-of-service orgain privileged access to the
vCMP hypervisor host system. This vulnerability affects only hardware
platforms that are vCMP-capable and are provisioned for vCMP. For a
list of vCMP capable hardware platforms, refer to K14088: vCMP host
and compatible guest version matrix.

BIG-IQ, Enterprise Manager, F5 iWorkflow, Traffix SDC

There is no impact; these F5 products are not affected by this
vulnerability."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.f5.com/csp/article/K11186236"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.f5.com/csp/article/K14088"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution K11186236."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/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:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_access_policy_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_advanced_firewall_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_acceleration_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_security_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_visibility_and_reporting");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_global_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_link_controller");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_local_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_policy_enforcement_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_webaccelerator");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/02/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/31");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"F5 Networks Local Security Checks");

  script_dependencies("f5_bigip_detect.nbin");
  script_require_keys("Host/local_checks_enabled", "Host/BIG-IP/hotfix", "Host/BIG-IP/modules", "Host/BIG-IP/version", "Settings/ParanoidReport");

  exit(0);
}


include("f5_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
version = get_kb_item("Host/BIG-IP/version");
if ( ! version ) audit(AUDIT_OS_NOT, "F5 Networks BIG-IP");
if ( isnull(get_kb_item("Host/BIG-IP/hotfix")) ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/hotfix");
if ( ! get_kb_item("Host/BIG-IP/modules") ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/modules");

sol = "K11186236";
vmatrix = make_array();

if (report_paranoia < 2) audit(AUDIT_PARANOID);

# AFM
vmatrix["AFM"] = make_array();
vmatrix["AFM"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["AFM"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# AM
vmatrix["AM"] = make_array();
vmatrix["AM"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["AM"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# APM
vmatrix["APM"] = make_array();
vmatrix["APM"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["APM"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["ASM"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# AVR
vmatrix["AVR"] = make_array();
vmatrix["AVR"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["AVR"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# GTM
vmatrix["GTM"] = make_array();
vmatrix["GTM"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["GTM"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["LC"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["LTM"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# PEM
vmatrix["PEM"] = make_array();
vmatrix["PEM"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["PEM"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");

# WAM
vmatrix["WAM"] = make_array();
vmatrix["WAM"]["affected"  ] = make_list("15.0.0-15.0.1","14.0.0-14.1.2","13.0.0-13.1.3");
vmatrix["WAM"]["unaffected"] = make_list("15.1.0","14.1.2.4","13.1.3.2");


if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
  if (report_verbosity > 0) security_warning(port:0, extra:bigip_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = bigip_get_tested_modules();
  audit_extra = "For BIG-IP module(s) " + tested + ",";
  if (tested) audit(AUDIT_INST_VER_NOT_VULN, audit_extra, version);
  else audit(AUDIT_HOST_NOT, "running any of the affected modules");
}

#
# (C) Tenable Network Security, Inc.
#

# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2019-0077. The text
# itself is copyright (C) ZTE, Inc.

include("compat.inc");

if (description)
{
  script_id(127285);
  script_version("1.2");
  script_cvs_date("Date: 2019/09/24 11:01:33");

  script_cve_id(
    "CVE-2017-7294",
    "CVE-2017-15121",
    "CVE-2017-15126",
    "CVE-2019-6974",
    "CVE-2019-7221"
  );
  script_bugtraq_id(107127, 107294);

  script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0077)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has kernel packages installed that are affected by
multiple vulnerabilities:

  - A non-privileged user is able to mount a fuse filesystem
    on RHEL 6 or 7 and crash a system if an application
    punches a hole in a file that does not end aligned to a
    page boundary. (CVE-2017-15121)

  - A flaw was found in the Linux kernel's handling of fork
    failure when dealing with event messages in the
    userfaultfd code. Failure to fork correctly can create a
    fork event that will be removed from an already freed
    list of events. (CVE-2017-15126)

  - An out-of-bounds write vulnerability was found in the
    Linux kernel's vmw_surface_define_ioctl() function, in
    the 'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c' file. Due
    to the nature of the flaw, privilege escalation cannot
    be fully ruled out, although we believe it is unlikely.
    (CVE-2017-7294)

  - A use-after-free vulnerability was found in the way the
    Linux kernel's KVM hypervisor implements its device
    control API. While creating a device via
    kvm_ioctl_create_device(), the device holds a reference
    to a VM object, later this reference is transferred to
    the caller's file descriptor table. If such file
    descriptor was to be closed, reference count to the VM
    object could become zero, potentially leading to a use-
    after-free issue. A user/process could use this flaw to
    crash the guest VM resulting in a denial of service
    issue or, potentially, gain privileged access to a
    system. (CVE-2019-6974)

  - A use-after-free vulnerability was found in the way the
    Linux kernel's KVM hypervisor emulates a preemption
    timer for L2 guests when nested (=1) virtualization is
    enabled. This high resolution timer(hrtimer) runs when a
    L2 guest is active. After VM exit, the sync_vmcs12()
    timer object is stopped. The use-after-free occurs if
    the timer object is freed before calling sync_vmcs12()
    routine. A guest user/process could use this flaw to
    crash the host kernel resulting in a denial of service
    or, potentially, gain privileged access to a system.
    (CVE-2019-7221)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2019-0077");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL kernel packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:N/AC:H/PR:N/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-2017-15126");
  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:"2017/03/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

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

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

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

  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/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");

if (release !~ "CGSL CORE 5.04" &&
    release !~ "CGSL MAIN 5.04")
  audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.04 / NewStart CGSL MAIN 5.04');

if (!get_kb_item("Host/ZTE-CGSL/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, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL CORE 5.04": [
    "kernel-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-abi-whitelists-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-core-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-debug-core-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-debug-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-debug-devel-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-debug-modules-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-debuginfo-common-x86_64-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-devel-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-doc-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-headers-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-modules-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-sign-keys-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-tools-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-tools-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-tools-libs-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "kernel-tools-libs-devel-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "perf-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "perf-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "python-perf-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite",
    "python-perf-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.331.gfd9c070.lite"
  ],
  "CGSL MAIN 5.04": [
    "kernel-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-abi-whitelists-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-debug-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-debug-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-debug-devel-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-debuginfo-common-x86_64-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-devel-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-doc-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-headers-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-sign-keys-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-tools-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-tools-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-tools-libs-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "kernel-tools-libs-devel-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "perf-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "perf-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "python-perf-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133",
    "python-perf-debuginfo-3.10.0-693.21.1.el7.cgslv5_4.13.328.gaf0e133"
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2019:0818 and 
# CentOS Errata and Security Advisory 2019:0818 respectively.
#

include("compat.inc");

if (description)
{
  script_id(124416);
  script_version("1.5");
  script_cvs_date("Date: 2019/12/31");

  script_cve_id("CVE-2019-6974", "CVE-2019-7221");
  script_xref(name:"RHSA", value:"2019:0818");

  script_name(english:"CentOS 7 : kernel (CESA-2019:0818)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An update for kernel is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

Security Fix(es) :

* Kernel: KVM: potential use-after-free via kvm_ioctl_create_device()
(CVE-2019-6974)

* Kernel: KVM: nVMX: use-after-free of the hrtimer for emulation of
the preemption timer (CVE-2019-7221)

For more details about the security issue(s), including the impact, a
CVSS score, acknowledgments, and other related information, refer to
the CVE page(s) listed in the References section.

Bug Fix(es) :

* rbd: avoid corruption on partially completed bios [rhel-7.6.z]
(BZ#1672514)

* xfs_vm_writepages deadly embrace between kworker and user task.
[rhel-7.6.z] (BZ#1673281)

* Offload Connections always get vlan priority 0 [rhel-7.6.z]
(BZ#1673821)

* [NOKIA] RHEL sends flood of Neighbour Solicitations under specific
conditions [rhel-7.6.z] (BZ#1677179)

* RHEL 7.6 - Host crash occurred on NVMe/IB system while running
controller reset [rhel-7.6.z] (BZ#1678214)

* [rhel7] raid0 md workqueue deadlock with stacked md devices
[rhel-7.6.z] (BZ#1678215)

* [PureStorage7.6]nvme disconnect following an unsuccessful Admin
queue creation causes kernel panic [rhel-7.6.z] (BZ#1678216)

* RFC: Regression with -fstack-check in 'backport upstream large stack
guard patch to RHEL6' patch [rhel-7.6.z] (BZ#1678221)

* [Hyper-V] [RHEL 7.6]hv_netvsc: Fix a network regression after
ifdown/ifup [rhel-7.6.z] (BZ#1679997)

* rtc_cmos: probe of 00:01 failed with error -16 [rhel-7.6.z]
(BZ#1683078)

* ACPI WDAT watchdog update [rhel-7.6.z] (BZ#1683079)

* high ovs-vswitchd CPU usage when VRRP over VXLAN tunnel causing
qrouter fail-over [rhel-7.6.z] (BZ#1683093)

* Openshift node drops outgoing POD traffic due to NAT hashtable race
in __ip_conntrack_confirm() [rhel-7.6.z] (BZ#1686766)

* [Backport] [v3,2/2] net: igmp: Allow user-space configuration of
igmp unsolicited report interval [rhel-7.6.z] (BZ#1686771)

* [RHEL7.6]: Intermittently seen FIFO parity error on T6225-SO adapter
[rhel-7.6.z] (BZ#1687487)

* The number of unsolict report about IGMP is incorrect [rhel-7.6.z]
(BZ# 1688225)

* RDT driver causing failure to boot on AMD Rome system with more than
255 CPUs [rhel-7.6.z] (BZ#1689120)

* mpt3sas_cm0: fault_state(0x2100)! [rhel-7.6.z] (BZ#1689379)

* rwsem in inconsistent state leading system to hung [rhel-7.6.z] (BZ#
1690323)

Users of kernel are advised to upgrade to these updated packages,
which fix these bugs."
  );
  # https://lists.centos.org/pipermail/centos-announce/2019-April/023278.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c7a8db01"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected kernel packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/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-2019-6974");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:bpftool");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-abi-whitelists");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:python-perf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/02/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/01");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/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, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"bpftool-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-abi-whitelists-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-debug-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-debug-devel-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-devel-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-doc-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-headers-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-tools-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-tools-libs-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"kernel-tools-libs-devel-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"perf-3.10.0-957.12.1.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"python-perf-3.10.0-957.12.1.el7")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "bpftool / kernel / kernel-abi-whitelists / kernel-debug / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3931-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(123678);
  script_version("1.6");
  script_cvs_date("Date: 2020/01/27");

  script_cve_id("CVE-2018-14678", "CVE-2018-18021", "CVE-2018-19824", "CVE-2019-3459", "CVE-2019-3460", "CVE-2019-6974", "CVE-2019-7221", "CVE-2019-7222", "CVE-2019-7308", "CVE-2019-8912", "CVE-2019-8980", "CVE-2019-9213");
  script_xref(name:"USN", value:"3931-1");

  script_name(english:"Ubuntu 18.04 LTS : linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, (USN-3931-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"M. Vefa Bicakci and Andy Lutomirski discovered that the kernel did not
properly set up all arguments to an error handler callback used when
running as a paravirtualized guest. An unprivileged attacker in a
paravirtualized guest VM could use this to cause a denial of service
(guest VM crash). (CVE-2018-14678)

It was discovered that the KVM implementation in the Linux kernel on
ARM 64bit processors did not properly handle some ioctls. An attacker
with the privilege to create KVM-based virtual machines could use this
to cause a denial of service (host system crash) or execute arbitrary
code in the host. (CVE-2018-18021)

Mathias Payer and Hui Peng discovered a use-after-free vulnerability
in the Advanced Linux Sound Architecture (ALSA) subsystem. A
physically proximate attacker could use this to cause a denial of
service (system crash). (CVE-2018-19824)

Shlomi Oberman, Yuli Shapiro, and Ran Menscher discovered an
information leak in the Bluetooth implementation of the Linux kernel.
An attacker within Bluetooth range could use this to expose sensitive
information (kernel memory). (CVE-2019-3459, CVE-2019-3460)

Jann Horn discovered that the KVM implementation in the Linux kernel
contained a use-after-free vulnerability. An attacker in a guest VM
with access to /dev/kvm could use this to cause a denial of service
(guest VM crash). (CVE-2019-6974)

Jim Mattson and Felix Wilhelm discovered a use-after-free
vulnerability in the KVM subsystem of the Linux kernel, when using
nested virtual machines. A local attacker in a guest VM could use this
to cause a denial of service (system crash) or possibly execute
arbitrary code in the host system. (CVE-2019-7221)

Felix Wilhelm discovered that an information leak vulnerability
existed in the KVM subsystem of the Linux kernel, when nested
virtualization is used. A local attacker could use this to expose
sensitive information (host system memory to a guest VM).
(CVE-2019-7222)

Jann Horn discovered that the eBPF implementation in the Linux kernel
was insufficiently hardened against Spectre V1 attacks. A local
attacker could use this to expose sensitive information.
(CVE-2019-7308)

It was discovered that a use-after-free vulnerability existed in the
user- space API for crypto (af_alg) implementation in the Linux
kernel. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2019-8912)

It was discovered that the Linux kernel did not properly deallocate
memory when handling certain errors while reading files. A local
attacker could use this to cause a denial of service (excessive memory
consumption). (CVE-2019-8980)

Jann Horn discovered that the mmap implementation in the Linux kernel
did not properly check for the mmap minimum address in some
situations. A local attacker could use this to assist exploiting a
kernel NULL pointer dereference vulnerability. (CVE-2019-9213).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/3931-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected 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:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-8912");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-oem");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-oem");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/07/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/04/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/03");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2019-2020 Canonical, Inc. / NASL script (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("ksplice.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(18\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 18.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2018-14678", "CVE-2018-18021", "CVE-2018-19824", "CVE-2019-3459", "CVE-2019-3460", "CVE-2019-6974", "CVE-2019-7221", "CVE-2019-7222", "CVE-2019-7308", "CVE-2019-8912", "CVE-2019-8980", "CVE-2019-9213");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-3931-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-1010-oracle", pkgver:"4.15.0-1010.12")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-1029-gcp", pkgver:"4.15.0-1029.31")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-1031-kvm", pkgver:"4.15.0-1031.31")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-1033-raspi2", pkgver:"4.15.0-1033.35")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-1035-aws", pkgver:"4.15.0-1035.37")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-1035-oem", pkgver:"4.15.0-1035.40")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-47-generic", pkgver:"4.15.0-47.50")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-47-generic-lpae", pkgver:"4.15.0-47.50")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-47-lowlatency", pkgver:"4.15.0-47.50")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-4.15.0-47-snapdragon", pkgver:"4.15.0-47.50")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-aws", pkgver:"4.15.0.1035.34")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-gcp", pkgver:"4.15.0.1029.31")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-generic", pkgver:"4.15.0.47.49")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-generic-lpae", pkgver:"4.15.0.47.49")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-gke", pkgver:"4.15.0.1029.31")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-kvm", pkgver:"4.15.0.1031.31")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-lowlatency", pkgver:"4.15.0.47.49")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-oem", pkgver:"4.15.0.1035.40")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-oracle", pkgver:"4.15.0.1010.13")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-raspi2", pkgver:"4.15.0.1033.31")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-snapdragon", pkgver:"4.15.0.47.49")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-virtual", pkgver:"4.15.0.47.49")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "linux-image-4.15-aws / linux-image-4.15-gcp / etc");
}