Vulnerabilities > CVE-2017-17712 - Race Condition vulnerability in Linux Kernel

#
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2018-0017.
#

include("compat.inc");

if (description)
{
  script_id(106706);
  script_version("3.4");
  script_cvs_date("Date: 2019/09/27 13:00:35");

  script_cve_id("CVE-2017-0861", "CVE-2017-12193", "CVE-2017-14140", "CVE-2017-15115", "CVE-2017-17712", "CVE-2017-5754", "CVE-2017-8824");
  script_xref(name:"IAVA", value:"2018-A-0019");

  script_name(english:"OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0017) (Meltdown)");
  script_summary(english:"Checks the RPM output for the updated packages.");

  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 :

  - drivers/char/mem.c: deny access in open operation when
    securelevel is set (Ethan Zhao) [Orabug: 27234850]
    [Orabug: 27234850]

  - hugetlb: fix nr_pmds accounting with shared page tables
    (Kirill A. Shutemov) [Orabug: 26988581]

  - x86/IBRS: Drop unnecessary WRITE_ONCE (Boris Ostrovsky)
    [Orabug: 27416198]

  - x86/IBRS: Don't try to change IBRS mode if IBRS is not
    available (Boris Ostrovsky) [Orabug: 27416198]

  - x86/IBRS: Remove support for IBRS_ENABLED_USER mode
    (Boris Ostrovsky) 

  - x86: Include linux/device.h in bugs_64.c (Boris
    Ostrovsky) [Orabug: 27418896]

  - x86/spectre: Drop the warning about ibrs being obsolete.
    (Konrad Rzeszutek Wilk)

  - x86/spec: Don't print the Missing arguments for option
    spectre_v2. (Konrad Rzeszutek Wilk)

  - x86/spec: Also print IBRS if IBPB is disabled. (Konrad
    Rzeszutek Wilk)

  - x86/IBPB: Provide debugfs interface for changing IBPB
    mode (Boris Ostrovsky) [Orabug: 27449065]

  - xen: Make PV Dom0 Linux kernel NUMA aware (Elena
    Ufimtseva)

  - net/rds: Fix incorrect error handling (H&aring kon
    Bugge) [Orabug: 26848729]

  - net/rds: use multiple sge than buddy allocation in
    congestion code (Wei Lin Guay) [Orabug: 26848729]

  - Revert 'RDS: fix the sg allocation based on actual
    message size' (Wei Lin Guay) [Orabug: 26848729]

  - Revert 'RDS: avoid large pages for sg allocation for TCP
    transport' (Wei Lin Guay) [Orabug: 26848729]

  - Revert 'net/rds: Reduce memory footprint in rds_sendmsg'
    (Wei Lin Guay) [Orabug: 26848729]

  - net/rds: reduce memory footprint during ib_post_recv in
    IB transport (Wei Lin Guay) [Orabug: 26848729]

  - net/rds: reduce memory footprint during rds_sendmsg with
    IB transport (Wei Lin Guay) [Orabug: 26848729]

  - net/rds: set the rds_ib_init_frag based on supported sge
    (Wei Lin Guay) [Orabug: 26848729]

  - bnxt_en: Fix possible corrupted NVRAM parameters from
    firmware response. (Michael Chan) [Orabug: 27199588]

  - x86, kasan: Fix build failure on KASAN=y && KMEMCHECK=y
    kernels (Andrey Ryabinin) [Orabug: 27255122]

  - x86, efi, kasan: Fix build failure on !KASAN &&
    KMEMCHECK=y kernels (Andrey Ryabinin) [Orabug: 27255122]

  - x86, efi, kasan: #undef memset/memcpy/memmove per arch
    (Andrey Ryabinin) [Orabug: 27255122]

  - Revert 'Makefile: Build with -Werror=date-time if the
    compiler supports it' (Gayatri Vasudevan) [Orabug:
    27255122]

  - dccp: CVE-2017-8824: use-after-free in DCCP code
    (Mohamed Ghannam) [Orabug: 27290300] (CVE-2017-8824)

  - x86/efi: Initialize and display UEFI secure boot state a
    bit later during init (Daniel Kiper) [Orabug: 27309477]

  - x86/espfix: Init espfix on the boot CPU side (Zhu
    Guihua) [Orabug: 27344552]

  - x86/espfix: Add 'cpu' parameter to init_espfix_ap (Zhu
    Guihua) 

  - ALSA: pcm: prevent UAF in snd_pcm_info (Robb Glasser)
    [Orabug: 27344841] (CVE-2017-0861) (CVE-2017-0861)

  - fs/ocfs2: remove page cache for converted direct write
    (Wengang Wang)

  - Revert 'ocfs2: code clean up for direct io' (Wengang
    Wang)

  - assoc_array: Fix a buggy node-splitting case (David
    Howells) [Orabug: 27364592] (CVE-2017-12193)
    (CVE-2017-12193)

  - Sanitize 'move_pages' permission checks (Linus Torvalds)
    [Orabug: 27364690] (CVE-2017-14140)

  - pti: compile fix for when PTI is disabled (Pavel
    Tatashin) [Orabug: 27383147] (CVE-2017-5754)

  - sctp: do not peel off an assoc from one netns to another
    one (Xin Long) [Orabug: 27386999] (CVE-2017-15115)

  - net: ipv4: fix for a race condition in raw_sendmsg
    (Mohamed Ghannam) [Orabug: 27390682] (CVE-2017-17712)

  - mlx4: add mstflint secure boot access kernel support
    (Qing Huang) 

  - x86: Move STUFF_RSB in to the idt macro (Konrad
    Rzeszutek Wilk)

  - x86/spec: STUFF_RSB _before_ ENABLE_IBRS (Konrad
    Rzeszutek Wilk)

  - x86: Move ENABLE_IBRS in the interrupt macro. (Konrad
    Rzeszutek Wilk)"
  );
  # https://oss.oracle.com/pipermail/oraclevm-errata/2018-February/000828.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f9702f90"
  );
  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:H/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:H/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:"exploited_by_malware", value:"true");

  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:"vuln_publication_date", value:"2017/09/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/09");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"OracleVM Local Security Checks");

  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-4.1.12-112.14.14.el6uek")) flag++;
if (rpm_check(release:"OVS3.4", reference:"kernel-uek-firmware-4.1.12-112.14.14.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");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4073. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(105433);
  script_version("3.15");
  script_cvs_date("Date: 2019/08/23 10:01:45");

  script_cve_id("CVE-2017-1000407", "CVE-2017-1000410", "CVE-2017-16538", "CVE-2017-16644", "CVE-2017-16995", "CVE-2017-17448", "CVE-2017-17449", "CVE-2017-17450", "CVE-2017-17558", "CVE-2017-17712", "CVE-2017-17741", "CVE-2017-17805", "CVE-2017-17806", "CVE-2017-17807", "CVE-2017-17862", "CVE-2017-17863", "CVE-2017-17864", "CVE-2017-8824");
  script_xref(name:"DSA", value:"4073");

  script_name(english:"Debian DSA-4073-1 : linux - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or information
leaks.

  - CVE-2017-8824
    Mohamed Ghannam discovered that the DCCP implementation
    did not correctly manage resources when a socket is
    disconnected and reconnected, potentially leading to a
    use-after-free. A local user could use this for denial
    of service (crash or data corruption) or possibly for
    privilege escalation. On systems that do not already
    have the dccp module loaded, this can be mitigated by
    disabling it:echo >> /etc/modprobe.d/disable-dccp.conf
    install dccp false

  - CVE-2017-16538
    Andrey Konovalov reported that the dvb-usb-lmedm04 media
    driver did not correctly handle some error conditions
    during initialisation. A physically present user with a
    specially designed USB device can use this to cause a
    denial of service (crash).

  - CVE-2017-16644
    Andrey Konovalov reported that the hdpvr media driver
    did not correctly handle some error conditions during
    initialisation. A physically present user with a
    specially designed USB device can use this to cause a
    denial of service (crash).

  - CVE-2017-16995
    Jann Horn discovered that the Extended BPF verifier did
    not correctly model the behaviour of 32-bit load
    instructions. A local user can use this for privilege
    escalation.

  - CVE-2017-17448
    Kevin Cernekee discovered that the netfilter subsystem
    allowed users with the CAP_NET_ADMIN capability in any
    user namespace, not just the root namespace, to enable
    and disable connection tracking helpers. This could lead
    to denial of service, violation of network security
    policy, or have other impact.

  - CVE-2017-17449
    Kevin Cernekee discovered that the netlink subsystem
    allowed users with the CAP_NET_ADMIN capability in any
    user namespace to monitor netlink traffic in all net
    namespaces, not just those owned by that user namespace.
    This could lead to exposure of sensitive information.

  - CVE-2017-17450
    Kevin Cernekee discovered that the xt_osf module allowed
    users with the CAP_NET_ADMIN capability in any user
    namespace to modify the global OS fingerprint list.

  - CVE-2017-17558
    Andrey Konovalov reported that that USB core did not
    correctly handle some error conditions during
    initialisation. A physically present user with a
    specially designed USB device can use this to cause a
    denial of service (crash or memory corruption), or
    possibly for privilege escalation.

  - CVE-2017-17712
    Mohamed Ghannam discovered a race condition in the IPv4
    raw socket implementation. A local user could use this
    to obtain sensitive information from the kernel.

  - CVE-2017-17741
    Dmitry Vyukov reported that the KVM implementation for
    x86 would over-read data from memory when emulating an
    MMIO write if the kvm_mmio tracepoint was enabled. A
    guest virtual machine might be able to use this to cause
    a denial of service (crash).

  - CVE-2017-17805
    It was discovered that some implementations of the
    Salsa20 block cipher did not correctly handle
    zero-length input. A local user could use this to cause
    a denial of service (crash) or possibly have other
    security impact.

  - CVE-2017-17806
    It was discovered that the HMAC implementation could be
    used with an underlying hash algorithm that requires a
    key, which was not intended. A local user could use this
    to cause a denial of service (crash or memory
    corruption), or possibly for privilege escalation.

  - CVE-2017-17807
    Eric Biggers discovered that the KEYS subsystem lacked a
    check for write permission when adding keys to a
    process's default keyring. A local user could use this
    to cause a denial of service or to obtain sensitive
    information.

  - CVE-2017-17862
    Alexei Starovoitov discovered that the Extended BPF
    verifier ignored unreachable code, even though it would
    still be processed by JIT compilers. This could possibly
    be used by local users for denial of service. It also
    increases the severity of bugs in determining
    unreachable code.

  - CVE-2017-17863
    Jann Horn discovered that the Extended BPF verifier did
    not correctly model pointer arithmetic on the stack
    frame pointer. A local user can use this for privilege
    escalation.

  - CVE-2017-17864
    Jann Horn discovered that the Extended BPF verifier
    could fail to detect pointer leaks from conditional
    code. A local user could use this to obtain sensitive
    information in order to exploit other vulnerabilities.

  - CVE-2017-1000407
    Andrew Honig reported that the KVM implementation for
    Intel processors allowed direct access to host I/O port
    0x80, which is not generally safe. On some systems this
    allows a guest VM to cause a denial of service (crash)
    of the host.

  - CVE-2017-1000410
    Ben Seri reported that the Bluetooth subsystem did not
    correctly handle short EFS information elements in L2CAP
    messages. An attacker able to communicate over Bluetooth
    could use this to obtain sensitive information from the
    kernel.

The various problems in the Extended BPF verifier can be mitigated by
disabling use of Extended BPF by unprivileged users:sysctl
kernel.unprivileged_bpf_disabled=1

Debian disables unprivileged user namespaces by default, but if they
are enabled (via the kernel.unprivileged_userns_clone sysctl) then
CVE-2017-17448 can be exploited by any local user."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-8824"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-16538"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-16644"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-16995"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17448"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17449"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17450"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17558"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17712"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17741"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17805"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17806"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17807"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17862"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17863"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17864"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-1000407"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-1000410"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-17448"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/linux"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/linux"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2017/dsa-4073"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the linux packages.

For the stable distribution (stretch), these problems have been fixed
in version 4.9.65-3+deb9u1."
  );
  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:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Linux BPF Sign Extension Local 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:debian:debian_linux:linux");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/26");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"9.0", prefix:"hyperv-daemons", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"libcpupower-dev", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"libcpupower1", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"libusbip-dev", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-compiler-gcc-6-arm", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-compiler-gcc-6-s390", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-compiler-gcc-6-x86", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-cpupower", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-doc-4.9", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-4kc-malta", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-5kc-malta", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-686", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-686-pae", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-amd64", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-arm64", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-armel", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-armhf", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-i386", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-mips", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-mips64el", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-mipsel", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-ppc64el", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-all-s390x", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-amd64", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-arm64", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-armmp", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-armmp-lpae", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-common", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-common-rt", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-loongson-3", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-marvell", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-octeon", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-powerpc64le", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-rt-686-pae", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-rt-amd64", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-headers-4.9.0-9-s390x", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-4kc-malta", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-4kc-malta-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-5kc-malta", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-5kc-malta-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-686", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-686-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-686-pae", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-686-pae-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-amd64", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-amd64-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-arm64", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-arm64-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-armmp", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-armmp-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-armmp-lpae", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-armmp-lpae-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-loongson-3", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-loongson-3-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-marvell", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-marvell-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-octeon", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-octeon-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-powerpc64le", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-powerpc64le-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-rt-686-pae", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-rt-686-pae-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-rt-amd64", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-rt-amd64-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-s390x", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-image-4.9.0-9-s390x-dbg", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-kbuild-4.9", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-libc-dev", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-manual-4.9", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-perf-4.9", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-source-4.9", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"linux-support-4.9.0-9", reference:"4.9.65-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"usbip", reference:"4.9.65-3+deb9u1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3582-1. 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(106972);
  script_version("3.10");
  script_cvs_date("Date: 2019/09/18 12:31:48");

  script_cve_id("CVE-2015-8952", "CVE-2017-12190", "CVE-2017-15115", "CVE-2017-17712", "CVE-2017-5715", "CVE-2017-8824");
  script_xref(name:"USN", value:"3582-1");
  script_xref(name:"IAVA", value:"2018-A-0020");

  script_name(english:"Ubuntu 16.04 LTS : linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities (USN-3582-1) (Spectre)");
  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:
"Mohamed Ghannam discovered that the IPv4 raw socket implementation in
the Linux kernel contained a race condition leading to uninitialized
pointer usage. A local attacker could use this to cause a denial of
service or possibly execute arbitrary code. (CVE-2017-17712)

Laurent Guerby discovered that the mbcache feature in the ext2 and
ext4 filesystems in the Linux kernel improperly handled xattr block
caching. A local attacker could use this to cause a denial of service.
(CVE-2015-8952)

Vitaly Mayatskikh discovered that the SCSI subsystem in the Linux
kernel did not properly track reference counts when merging buffers. A
local attacker could use this to cause a denial of service (memory
exhaustion). (CVE-2017-12190)

ChunYu Wang discovered that a use-after-free vulnerability existed in
the SCTP protocol 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-2017-15115)

Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP
protocol 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-2017-8824)

USN-3540-1 mitigated CVE-2017-5715 (Spectre Variant 2) for the amd64
architecture in Ubuntu 16.04 LTS. This update provides the
compiler-based retpoline kernel mitigation for the amd64 and i386
architectures. 

Jann Horn discovered that microprocessors utilizing speculative
execution and branch prediction may allow unauthorized memory reads
via sidechannel attacks. This flaw is known as Spectre. A local
attacker could use this to expose sensitive information, including
kernel memory. (CVE-2017-5715).

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/3582-1/"
  );
  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:H/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:H/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:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4-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-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-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-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/10/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/23");
  script_set_attribute(attribute:"in_the_news", value:"true");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 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:"^(16\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 16.04", "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-2015-8952", "CVE-2017-12190", "CVE-2017-15115", "CVE-2017-17712", "CVE-2017-5715", "CVE-2017-8824");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-3582-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-1019-kvm", pkgver:"4.4.0-1019.24")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-1052-aws", pkgver:"4.4.0-1052.61")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-1085-raspi2", pkgver:"4.4.0-1085.93")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-1087-snapdragon", pkgver:"4.4.0-1087.92")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-116-generic", pkgver:"4.4.0-116.140")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-116-generic-lpae", pkgver:"4.4.0-116.140")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-4.4.0-116-lowlatency", pkgver:"4.4.0-116.140")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-aws", pkgver:"4.4.0.1052.54")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-generic", pkgver:"4.4.0.116.122")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-generic-lpae", pkgver:"4.4.0.116.122")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-kvm", pkgver:"4.4.0.1019.18")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-lowlatency", pkgver:"4.4.0.116.122")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-raspi2", pkgver:"4.4.0.1085.85")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"linux-image-snapdragon", pkgver:"4.4.0.1087.79")) 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-4.4-aws / linux-image-4.4-generic / etc");
}