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nessusUbuntu Security Notice (C) 2018-2023 Canonical, Inc. / NASL script (C) 2018-2023 and is owned by Tenable, Inc. or an Affiliate thereof.UBUNTU_USN-3621-1.NASL
HistoryApr 06, 2018 - 12:00 a.m.

Ubuntu 14.04 LTS / 16.04 LTS : Ruby vulnerabilities (USN-3621-1)

2018-04-0600:00:00
Ubuntu Security Notice (C) 2018-2023 Canonical, Inc. / NASL script (C) 2018-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
9

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to access sensitive information.
(CVE-2018-1000073)

It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code.
(CVE-2018-1000074)

It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to cause a denial of service.
(CVE-2018-1000075)

It was discovered that Ruby incorrectly handled certain crypto signatures. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000076)

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to execute arbitrary code.
(CVE-2018-1000077, CVE-2018-1000078, CVE-2018-1000079).

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.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-3621-1. 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(108879);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/23");

  script_cve_id(
    "CVE-2018-1000073",
    "CVE-2018-1000074",
    "CVE-2018-1000075",
    "CVE-2018-1000076",
    "CVE-2018-1000077",
    "CVE-2018-1000078",
    "CVE-2018-1000079"
  );
  script_xref(name:"USN", value:"3621-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS : Ruby vulnerabilities (USN-3621-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"It was discovered that Ruby incorrectly handled certain inputs. An
attacker could possibly use this to access sensitive information.
(CVE-2018-1000073)

It was discovered that Ruby incorrectly handled certain files. An
attacker could possibly use this to execute arbitrary code.
(CVE-2018-1000074)

It was discovered that Ruby incorrectly handled certain files. An
attacker could possibly use this to cause a denial of service.
(CVE-2018-1000075)

It was discovered that Ruby incorrectly handled certain crypto
signatures. An attacker could possibly use this to execute arbitrary
code. (CVE-2018-1000076)

It was discovered that Ruby incorrectly handled certain inputs. An
attacker could possibly use this to execute arbitrary code.
(CVE-2018-1000077, CVE-2018-1000078, CVE-2018-1000079).

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://ubuntu.com/security/notices/USN-3621-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1000076");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/04/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/04/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libruby1.9.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libruby2.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libruby2.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtcltk-ruby1.9.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ri1.9.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.9.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.9.1-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.9.1-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.9.1-full");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.9.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby2.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby2.0-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby2.0-tcltk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby2.3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby2.3-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby2.3-tcltk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2018-2023 Canonical, Inc. / NASL script (C) 2018-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('14.04' >< os_release || '16.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '14.04', 'pkgname': 'libruby1.9.1', 'pkgver': '1.9.3.484-2ubuntu1.8'},
    {'osver': '14.04', 'pkgname': 'libruby2.0', 'pkgver': '2.0.0.484-1ubuntu2.6'},
    {'osver': '14.04', 'pkgname': 'libtcltk-ruby1.9.1', 'pkgver': '1.9.3.484-2ubuntu1.8'},
    {'osver': '14.04', 'pkgname': 'ri1.9.1', 'pkgver': '1.9.3.484-2ubuntu1.8'},
    {'osver': '14.04', 'pkgname': 'ruby1.9.1', 'pkgver': '1.9.3.484-2ubuntu1.8'},
    {'osver': '14.04', 'pkgname': 'ruby1.9.1-dev', 'pkgver': '1.9.3.484-2ubuntu1.8'},
    {'osver': '14.04', 'pkgname': 'ruby1.9.1-examples', 'pkgver': '1.9.3.484-2ubuntu1.8'},
    {'osver': '14.04', 'pkgname': 'ruby1.9.1-full', 'pkgver': '1.9.3.484-2ubuntu1.8'},
    {'osver': '14.04', 'pkgname': 'ruby1.9.3', 'pkgver': '1.9.3.484-2ubuntu1.8'},
    {'osver': '14.04', 'pkgname': 'ruby2.0', 'pkgver': '2.0.0.484-1ubuntu2.6'},
    {'osver': '14.04', 'pkgname': 'ruby2.0-dev', 'pkgver': '2.0.0.484-1ubuntu2.6'},
    {'osver': '14.04', 'pkgname': 'ruby2.0-tcltk', 'pkgver': '2.0.0.484-1ubuntu2.6'},
    {'osver': '16.04', 'pkgname': 'libruby2.3', 'pkgver': '2.3.1-2~16.04.7'},
    {'osver': '16.04', 'pkgname': 'ruby2.3', 'pkgver': '2.3.1-2~16.04.7'},
    {'osver': '16.04', 'pkgname': 'ruby2.3-dev', 'pkgver': '2.3.1-2~16.04.7'},
    {'osver': '16.04', 'pkgname': 'ruby2.3-tcltk', 'pkgver': '2.3.1-2~16.04.7'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libruby1.9.1 / libruby2.0 / libruby2.3 / libtcltk-ruby1.9.1 / etc');
}