GLSA-201701-20 : D-Bus: Format string vulnerability

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201701-20.
#
# The advisory text is Copyright (C) 2001-2017 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

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

if (description)
{
  script_id(96414);
  script_version("3.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_xref(name:"GLSA", value:"201701-20");

  script_name(english:"GLSA-201701-20 : D-Bus: Format string vulnerability");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201701-20
(D-Bus: Format string vulnerability)

    It was discovered that D-Bus incorrectly handles certain format strings.
    The impact of this new vulnerability is believed to not be exploitable
      if D-Bus is patched against CVE-2015-0245. The previous vulnerability
      (CVE-2015-0245) was addressed in GLSA-201503-02 referenced below.
  
Impact :

    A local attacker could cause a Denial of Service condition or possibly
      execute arbitrary code.
  
Workaround :

    The vulnerable D-Bus interface is intended only for use by systemd
      running as root.
    The administrator can install a policy which denies sending from
      org.freedesktop.systemd1.Activator” to D-Bus. This will prevent
      non-root attackers from reaching the interface in order to exercise this
      flaw."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201503-02"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201701-20"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All D-Bus users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=sys-apps/dbus-1.10.12'"
  );
  script_set_attribute(attribute:"risk_factor", value:"Medium");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:dbus");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/01/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/01/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2021 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"sys-apps/dbus", unaffected:make_list("ge 1.10.12"), vulnerable:make_list("lt 1.10.12"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "D-Bus");
}