Scientific Linux Security Update : kernel on SL6.x i386/x86_64

2013-03-15T00:00:00
ID SL_20130312_KERNEL_ON_SL6_X.NASL
Type nessus
Reporter This script is Copyright (C) 2013-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-01-02T00:00:00

Description

This update fixes the following security issues :

  • A flaw was found in the way the xen_iret() function in the Linux kernel used the DS (the CPU

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(65564);
  script_version("1.2");
  script_cvs_date("Date: 2018/12/31 11:35:01");

  script_cve_id("CVE-2013-0228", "CVE-2013-0268");

  script_name(english:"Scientific Linux Security Update : kernel on SL6.x i386/x86_64");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update fixes the following security issues :

  - A flaw was found in the way the xen_iret() function in
    the Linux kernel used the DS (the CPU's Data Segment)
    register. A local, unprivileged user in a 32-bit,
    para-virtualized Xen hypervisor guest could use this
    flaw to crash the guest or, potentially, escalate their
    privileges. (CVE-2013-0228, Important)

  - A flaw was found in the way file permission checks for
    the '/dev/cpu/[x]/msr' files were performed in
    restricted root environments (for example, when using a
    capability-based security model). A local user with the
    ability to write to these files could use this flaw to
    escalate their privileges to kernel level, for example,
    by writing to the SYSENTER_EIP_MSR register.
    (CVE-2013-0268, Important)

The system must be rebooted for this update to take effect."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1303&L=scientific-linux-errata&T=0&P=4386
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?0e780f94"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/03/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/03/15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
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 (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL6", reference:"kernel-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-debuginfo-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-devel-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debuginfo-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", cpu:"i386", reference:"kernel-debuginfo-common-i686-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-devel-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-doc-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-firmware-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-headers-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-debuginfo-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"python-perf-2.6.32-358.2.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"python-perf-debuginfo-2.6.32-358.2.1.el6")) flag++;


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