Vulnerabilities > CVE-2017-9232 - Missing Authorization vulnerability in Canonical Juju

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-9232
• https://bugs.launchpad.net/juju/+bug/1682411

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3300-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(100509);
  script_version("3.10");
  script_cvs_date("Date: 2019/09/18 12:31:47");

  script_cve_id("CVE-2017-9232");
  script_xref(name:"USN", value:"3300-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : juju-core vulnerability (USN-3300-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Ryan Beisner discovered juju did not set permissions on a Unix domain
socket. A local attacker could use this flaw to gain administrative
privileges.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/3300-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Juju-run Agent Privilege Escalation');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:juju");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:juju-2.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:juju-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:juju-local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:juju-local-kvm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:17.04");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/05/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/05/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/30");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(14\.04|16\.04|16\.10|17\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 14.04 / 16.04 / 16.10 / 17.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) 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, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"14.04", pkgname:"juju", pkgver:"1.25.6-0ubuntu1.14.04.2")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"juju-core", pkgver:"1.25.6-0ubuntu1.14.04.2")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"juju-local", pkgver:"1.25.6-0ubuntu1.14.04.2")) flag++;
if (ubuntu_check(osver:"14.04", pkgname:"juju-local-kvm", pkgver:"1.25.6-0ubuntu1.14.04.2")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"juju", pkgver:"2.0.2-0ubuntu0.16.04.2")) flag++;
if (ubuntu_check(osver:"16.04", pkgname:"juju-2.0", pkgver:"2.0.2-0ubuntu0.16.04.2")) flag++;
if (ubuntu_check(osver:"16.10", pkgname:"juju", pkgver:"2.0.2-0ubuntu0.16.10.2")) flag++;
if (ubuntu_check(osver:"16.10", pkgname:"juju-2.0", pkgver:"2.0.2-0ubuntu0.16.10.2")) flag++;
if (ubuntu_check(osver:"17.04", pkgname:"juju", pkgver:"2.0.2-0ubuntu2.1")) flag++;
if (ubuntu_check(osver:"17.04", pkgname:"juju-2.0", pkgver:"2.0.2-0ubuntu2.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "juju / juju-2.0 / juju-core / juju-local / juju-local-kvm");
}