EulerOS 2.0 SP2 : kernel (EulerOS-SA-2017-1155)

2017-08-08T00:00:00
ID EULEROS_SA-2017-1155.NASL
Type nessus
Reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2017-08-08T00:00:00

Description

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  • An issue was discovered in the size of the stack guard page on Linux, specifically a 4k stack guard page is not sufficiently large and can be

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

include("compat.inc");

if (description)
{
  script_id(102242);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/04");

  script_cve_id(
    "CVE-2015-8839",
    "CVE-2017-1000364",
    "CVE-2017-10911"
  );

  script_name(english:"EulerOS 2.0 SP2 : kernel (EulerOS-SA-2017-1155)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the kernel packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - An issue was discovered in the size of the stack guard
    page on Linux, specifically a 4k stack guard page is
    not sufficiently large and can be 'jumped' over (the
    stack guard page is bypassed), this affects Linux
    Kernel versions 4.11.5 and earlier (the stackguard page
    was introduced in 2010).(CVE-2017-1000364)

  - The make_response function in
    drivers/block/xen-blkback/blkback.c in the Linux kernel
    before 4.11.8 allows guest OS users to obtain sensitive
    information from host OS (or other guest OS) kernel
    memory by leveraging the copying of uninitialized
    padding fields in Xen block-interface response
    structures, aka XSA-216.(CVE-2017-10911)

  - Multiple race conditions in the ext4 filesystem
    implementation in the Linux kernel before 4.5 allow
    local users to cause a denial of service (disk
    corruption) by writing to a page that is associated
    with a different user's file after unsynchronized hole
    punching and page-fault handling.(CVE-2015-8839)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2017-1155
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f563fb84");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/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:H/PR:N/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:"metasploit_name", value:'rsh_stack_clash_priv_esc.rb');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/07/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/08/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-debuginfo-common-x86_64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-perf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(2)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["kernel-3.10.0-327.55.58.94.h9",
        "kernel-debug-3.10.0-327.55.58.94.h9",
        "kernel-debug-devel-3.10.0-327.55.58.94.h9",
        "kernel-debuginfo-3.10.0-327.55.58.94.h9",
        "kernel-debuginfo-common-x86_64-3.10.0-327.55.58.94.h9",
        "kernel-devel-3.10.0-327.55.58.94.h9",
        "kernel-headers-3.10.0-327.55.58.94.h9",
        "kernel-tools-3.10.0-327.55.58.94.h9",
        "kernel-tools-libs-3.10.0-327.55.58.94.h9",
        "perf-3.10.0-327.55.58.94.h9",
        "python-perf-3.10.0-327.55.58.94.h9"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"2", reference:pkg)) 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, "kernel");
}