Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4172)

2018-07-18T00:00:00
ID ORACLELINUX_ELSA-2018-4172.NASL
Type nessus
Reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-05-02T00:00:00

Description

Description of changes:

[2.6.39-400.300.2.el6uek] - Revert

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2018-4172.
#

include("compat.inc");

if (description)
{
  script_id(111144);
  script_version("1.7");
  script_cvs_date("Date: 2019/09/27 13:00:39");

  script_cve_id("CVE-2015-8575", "CVE-2017-11600", "CVE-2017-17741", "CVE-2017-7616", "CVE-2017-8824", "CVE-2018-10087", "CVE-2018-10124", "CVE-2018-1130");

  script_name(english:"Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4172)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Description of changes:

[2.6.39-400.300.2.el6uek]
- Revert 'RDS: don't commit to queue till transport connection is up' 
(Santosh Shilimkar)  [Orabug: 27619034] - KVM: Fix stack-out-of-bounds 
read in write_mmio (Wanpeng Li)  [Orabug: 27951293]  {CVE-2017-17741} 
{CVE-2017-17741}
- kernel/exit.c: avoid undefined behaviour when calling wait4() 
wait4(-2147483648, 0x20, 0, 0xdd0000) triggers: UBSAN: Undefined 
behaviour in kernel/exit.c:1651:9 (mridula shastry)  [Orabug: 28049790] 
{CVE-2018-10087}
- kernel/signal.c: avoid undefined behaviour in kill_something_info When 
running kill(72057458746458112, 0) in userspace I hit the following 
issue. (mridula shastry)  [Orabug: 28082989]  {CVE-2018-10124}
- bluetooth: Validate socket address length in sco_sock_bind(). 
(mlevatic)  [Orabug: 28130291]  {CVE-2015-8575}
- x86/bug: Fix typo's from commit b2d2b5b2 (x86/fpu: Make eager FPU 
default) (Mihai Carabas)  [Orabug: 28194606] - dccp: check sk for closed 
state in dccp_sendmsg() (Alexey Kodanev)  [Orabug: 28220512] 
{CVE-2017-8824} {CVE-2018-1130}
- mm/mempolicy.c: fix error handling in set_mempolicy and mbind. (Chris 
Salls)  [Orabug: 28242479]  {CVE-2017-7616}
- xfrm: policy: check policy direction value (Vladis Dronov)  [Orabug: 
28264531]  {CVE-2017-11600} {CVE-2017-11600}"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2018-July/007888.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected unbreakable enterprise kernel 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:"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:oracle:linux:kernel-uek");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/07/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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:"Oracle Linux Local Security Checks");

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

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/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, "Oracle Linux", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2015-8575", "CVE-2017-11600", "CVE-2017-17741", "CVE-2017-7616", "CVE-2017-8824", "CVE-2018-10087", "CVE-2018-10124", "CVE-2018-1130");  
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for ELSA-2018-4172");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

kernel_major_minor = get_kb_item("Host/uname/major_minor");
if (empty_or_null(kernel_major_minor)) exit(1, "Unable to determine kernel major-minor level.");
expected_kernel_major_minor = "2.6";
if (kernel_major_minor != expected_kernel_major_minor)
  audit(AUDIT_OS_NOT, "running kernel level " + expected_kernel_major_minor + ", it is running kernel level " + kernel_major_minor);

flag = 0;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-2.6.39-400.300.2.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-debug-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-debug-2.6.39-400.300.2.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-debug-devel-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-debug-devel-2.6.39-400.300.2.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-devel-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-devel-2.6.39-400.300.2.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-doc-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-doc-2.6.39-400.300.2.el6uek")) flag++;
if (rpm_exists(release:"EL6", rpm:"kernel-uek-firmware-2.6.39") && rpm_check(release:"EL6", reference:"kernel-uek-firmware-2.6.39-400.300.2.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, "affected kernel");
}