CentOS 5 : kernel (CESA-2013:1348)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2013:1348 and 
# CentOS Errata and Security Advisory 2013:1348 respectively.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(79153);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2012-4398");
  script_bugtraq_id(55361);
  script_xref(name:"RHSA", value:"2013:1348");

  script_name(english:"CentOS 5 : kernel (CESA-2013:1348)");
  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:
"Updated kernel packages that fix one security issue, several bugs, and
add various enhancements are now available as part of the ongoing
support and maintenance of Red Hat Enterprise Linux version 5. This is
the tenth regular update.

The Red Hat Security Response Team has rated this update as having
moderate 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.

This update fixes the following security issue :

* It was found that a deadlock could occur in the Out of Memory (OOM)
killer. A process could trigger this deadlock by consuming a large
amount of memory, and then causing request_module() to be called. A
local, unprivileged user could use this flaw to cause a denial of
service (excessive memory consumption). (CVE-2012-4398, Moderate)

Red Hat would like to thank Tetsuo Handa for reporting this issue.

This update also fixes numerous bugs and adds various enhancements.
Refer to the Red Hat Enterprise Linux 5.10 Release Notes for
information on the most significant of these changes, and the
Technical Notes for further information, both linked to in the
References.

All Red Hat Enterprise Linux 5 users are advised to install these
updated packages, which correct this issue, and fix the bugs and add
the enhancements noted in the Red Hat Enterprise Linux 5.10 Release
Notes and Technical Notes. The system must be rebooted for this update
to take effect."
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2013-October/000843.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?d3bb1046"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected kernel packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2012-4398");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-PAE");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-PAE-devel");
  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-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-xen-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/02/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/10/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2021 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:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 5.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-5", reference:"kernel-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", cpu:"i386", reference:"kernel-PAE-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", cpu:"i386", reference:"kernel-PAE-devel-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-debug-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-debug-devel-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-devel-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-doc-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-headers-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-xen-2.6.18-371.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-xen-devel-2.6.18-371.el5")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel / kernel-PAE / kernel-PAE-devel / kernel-debug / etc");
}