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

2012-08-01T00:00:00
ID SL_20110712_KERNEL_ON_SL6_X.NASL
Type nessus
Reporter This script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-04-02T00:00:00

Description

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

This update fixes the following security issues :

  • It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete. If packets were received at the time the ipip or ip_gre module was still being loaded into the kernel, it could cause a denial of service. (CVE-2011-1767, CVE-2011-1768, Moderate)

  • It was found that an mmap() call with the MAP_PRIVATE flag on

                                        
                                            #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(61082);
  script_version("1.4");
  script_cvs_date("Date: 2019/10/25 13:36:19");

  script_cve_id("CVE-2011-1767", "CVE-2011-2479");

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

This update fixes the following security issues :

  - It was found that the receive hook in the ipip_init()
    function in the ipip module, and in the ipgre_init()
    function in the ip_gre module, could be called before
    network namespaces setup is complete. If packets were
    received at the time the ipip or ip_gre module was still
    being loaded into the kernel, it could cause a denial of
    service. (CVE-2011-1767, CVE-2011-1768, Moderate)

  - It was found that an mmap() call with the MAP_PRIVATE
    flag on '/dev/zero' would create transparent hugepages
    and trigger a certain robustness check. A local,
    unprivileged user could use this flaw to cause a denial
    of service. (CVE-2011-2479, Moderate)

This update also fixes various bugs. Documentation for these bug fixes
will be available shortly from the Technical Notes document linked to
in the References section.

Users should upgrade to these updated packages, which contain
backported patches to resolve these issues, and fix the bugs noted in
the Technical Notes. The system must be rebooted for this update to
take effect."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1107&L=scientific-linux-errata&T=0&P=1046
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?48cc8ba8"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:N/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:"2011/07/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2019 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-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-debuginfo-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debug-devel-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-debuginfo-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", cpu:"i386", reference:"kernel-debuginfo-common-i686-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-devel-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-doc-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-firmware-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"kernel-headers-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-2.6.32-131.6.1.el6")) flag++;
if (rpm_check(release:"SL6", reference:"perf-debuginfo-2.6.32-131.6.1.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");