RHEL 7 : kernel (RHSA-2016:0064)

2016-01-26T00:00:00
ID REDHAT-RHSA-2016-0064.NASL
Type nessus
Reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-01-02T00:00:00

Description

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 7.

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

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

  • A use-after-free flaw was found in the way the Linux kernel

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2016:0064. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(88173);
  script_version("2.16");
  script_cvs_date("Date: 2019/10/24 15:35:41");

  script_cve_id("CVE-2016-0728");
  script_xref(name:"RHSA", value:"2016:0064");

  script_name(english:"RHEL 7 : kernel (RHSA-2016:0064)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated kernel packages that fix one security issue are now available
for Red Hat Enterprise Linux 7.

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

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

* A use-after-free flaw was found in the way the Linux kernel's key
management subsystem handled keyring object reference counting in
certain error path of the join_session_keyring() function. A local,
unprivileged user could use this flaw to escalate their privileges on
the system. (CVE-2016-0728, Important)

Red Hat would like to thank the Perception Point research team for
reporting this issue.

All kernel users are advised to upgrade to these updated packages,
which contain a backported patch to correct this issue. The system
must be rebooted for this update to take effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2016:0064"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2016-0728"
  );
  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:"exploit_framework_core", 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:redhat:enterprise_linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-s390x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-debuginfo-common-x86_64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-perf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python-perf-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/26");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.x", "Red Hat " + 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2016-0728");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for RHSA-2016:0064");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2016:0064";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", reference:"kernel-abi-whitelists-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-debug-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-debug-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-debug-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-debug-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-debug-devel-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-debug-devel-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-debuginfo-common-s390x-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-devel-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-devel-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", reference:"kernel-doc-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-headers-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-headers-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-kdump-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-kdump-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"kernel-kdump-devel-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-tools-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-tools-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-tools-libs-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"kernel-tools-libs-devel-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"perf-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"perf-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"perf-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"perf-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"python-perf-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"python-perf-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"python-perf-debuginfo-3.10.0-327.4.5.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"python-perf-debuginfo-3.10.0-327.4.5.el7")) flag++;


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