Oracle Linux 6 : system-config-firewall (ELSA-2011-0953)

#%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-2011:0953 and 
# Oracle Linux Security Advisory ELSA-2011-0953 respectively.
#

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

if (description)
{
  script_id(68307);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2011-2520");
  script_bugtraq_id(48715);
  script_xref(name:"RHSA", value:"2011:0953");

  script_name(english:"Oracle Linux 6 : system-config-firewall (ELSA-2011-0953)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2011:0953 :

Updated system-config-firewall packages that fix one security issue
are now available for Red Hat Enterprise Linux 6.

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.

system-config-firewall is a graphical user interface for basic
firewall setup.

It was found that system-config-firewall used the Python pickle module
in an insecure way when sending data (via D-Bus) to the privileged
back-end mechanism. A local user authorized to configure firewall
rules using system-config-firewall could use this flaw to execute
arbitrary code with root privileges, by sending a specially crafted
serialized object. (CVE-2011-2520)

Red Hat would like to thank Marco Slaviero of SensePost for reporting
this issue.

This erratum updates system-config-firewall to use JSON (JavaScript
Object Notation) for data exchange, instead of pickle. Therefore, an
updated version of system-config-printer that uses this new
communication data format is also provided in this erratum.

Users of system-config-firewall are advised to upgrade to these
updated packages, which contain a backported patch to resolve this
issue. Running instances of system-config-firewall must be restarted
before the utility will be able to communicate with its updated
back-end."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2011-July/002233.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected system-config-firewall packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  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:oracle:linux:system-config-firewall");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:system-config-firewall-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:system-config-firewall-tui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:system-config-printer");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:system-config-printer-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:system-config-printer-udev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/07/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "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);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6", "Oracle Linux " + 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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL6", reference:"system-config-firewall-1.2.27-3.el6_1.3")) flag++;
if (rpm_check(release:"EL6", reference:"system-config-firewall-base-1.2.27-3.el6_1.3")) flag++;
if (rpm_check(release:"EL6", reference:"system-config-firewall-tui-1.2.27-3.el6_1.3")) flag++;
if (rpm_check(release:"EL6", reference:"system-config-printer-1.1.16-17.el6_1.2")) flag++;
if (rpm_check(release:"EL6", reference:"system-config-printer-libs-1.1.16-17.el6_1.2")) flag++;
if (rpm_check(release:"EL6", reference:"system-config-printer-udev-1.1.16-17.el6_1.2")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "system-config-firewall / system-config-firewall-base / etc");
}