Scientific Linux Security Update : systemd on SL7.x x86_64

2016-12-15T00:00:00
ID SL_20161103_SYSTEMD_ON_SL7_X.NASL
Type nessus
Reporter Tenable
Modified 2016-12-15T00:00:00

Description

Security Fix(es) :

  • A flaw was found in the way systemd handled empty notification messages. A local attacker could use this flaw to make systemd freeze its execution, preventing further management of system services, system shutdown, or zombie process collection via systemd. (CVE-2016-7795)

Bug Fix(es) :

  • Previously, the udev device manager automatically enabled all memory banks on IBM z System installations. As a consequence, hot plug memory was enabled automatically, which was incorrect. With this update, system architecture checks have been added to the udev rules to address the problem. As a result, hot plug memory is no longer automatically enabled.

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

include("compat.inc");

if (description)
{
  script_id(95862);
  script_version("$Revision: 3.1 $");
  script_cvs_date("$Date: 2016/12/15 14:46:41 $");

  script_cve_id("CVE-2016-7795");

  script_name(english:"Scientific Linux Security Update : systemd on SL7.x 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:
"Security Fix(es) :

  - A flaw was found in the way systemd handled empty
    notification messages. A local attacker could use this
    flaw to make systemd freeze its execution, preventing
    further management of system services, system shutdown,
    or zombie process collection via systemd.
    (CVE-2016-7795)

Bug Fix(es) :

  - Previously, the udev device manager automatically
    enabled all memory banks on IBM z System installations.
    As a consequence, hot plug memory was enabled
    automatically, which was incorrect. With this update,
    system architecture checks have been added to the udev
    rules to address the problem. As a result, hot plug
    memory is no longer automatically enabled."
  );
  # http://listserv.fnal.gov/scripts/wa.exe?A2=ind1612&L=scientific-linux-errata&F=&S=&P=1691
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?c52fa0f0"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");

  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:"2016/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/12/15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016 Tenable Network Security, Inc.");
  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:"SL7", cpu:"x86_64", reference:"libgudev1-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"libgudev1-devel-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-debuginfo-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-devel-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-journal-gateway-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-libs-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-networkd-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-python-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-resolved-219-30.el7_3.3")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"systemd-sysv-219-30.el7_3.3")) 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");