Ubuntu 12.04 LTS / 12.10 / 13.04 / 13.10 : ruby1.8, ruby1.9.1 vulnerabilities (USN-2035-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-2035-1. 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(71139);
  script_version("1.7");
  script_cvs_date("Date: 2019/09/19 12:54:29");

  script_cve_id("CVE-2013-2065", "CVE-2013-4164");
  script_bugtraq_id(59881, 63873);
  script_xref(name:"USN", value:"2035-1");

  script_name(english:"Ubuntu 12.04 LTS / 12.10 / 13.04 / 13.10 : ruby1.8, ruby1.9.1 vulnerabilities (USN-2035-1)");
  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:
"Charlie Somerville discovered that Ruby incorrectly handled floating
point number conversion. An attacker could possibly use this issue
with an application that converts text to floating point numbers to
cause the application to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2013-4164)

Vit Ondruch discovered that Ruby did not perform taint checking for
certain functions. An attacker could possibly use this issue to bypass
certain intended restrictions. (CVE-2013-2065).

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/2035-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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:canonical:ubuntu_linux:libruby1.8");
  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:ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.9.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:13.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:13.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/11/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/11/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/11/29");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2013-2019 Canonical, Inc. / NASL script (C) 2013-2019 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:"^(12\.04|12\.10|13\.04|13\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04 / 12.10 / 13.04 / 13.10", "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:"12.04", pkgname:"libruby1.8", pkgver:"1.8.7.352-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"libruby1.9.1", pkgver:"1.9.3.0-1ubuntu2.8")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"ruby1.8", pkgver:"1.8.7.352-2ubuntu1.4")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"ruby1.9.1", pkgver:"1.9.3.0-1ubuntu2.8")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libruby1.8", pkgver:"1.8.7.358-4ubuntu0.4")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"libruby1.9.1", pkgver:"1.9.3.194-1ubuntu1.6")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"ruby1.8", pkgver:"1.8.7.358-4ubuntu0.4")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"ruby1.9.1", pkgver:"1.9.3.194-1ubuntu1.6")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"libruby1.8", pkgver:"1.8.7.358-7ubuntu1.2")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"libruby1.9.1", pkgver:"1.9.3.194-8.1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"ruby1.8", pkgver:"1.8.7.358-7ubuntu1.2")) flag++;
if (ubuntu_check(osver:"13.04", pkgname:"ruby1.9.1", pkgver:"1.9.3.194-8.1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"libruby1.8", pkgver:"1.8.7.358-7ubuntu2.1")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"libruby1.9.1", pkgver:"1.9.3.194-8.1ubuntu2.1")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"ruby1.8", pkgver:"1.8.7.358-7ubuntu2.1")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"ruby1.9.1", pkgver:"1.9.3.194-8.1ubuntu2.1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "libruby1.8 / libruby1.9.1 / ruby1.8 / ruby1.9.1");
}