Ubuntu 4.10 : ruby1.8 vulnerability (USN-20-1)

#%NASL_MIN_LEVEL 70300

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-20-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

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

if (description)
{
  script_id(20615);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2004-0983");
  script_xref(name:"USN", value:"20-1");

  script_name(english:"Ubuntu 4.10 : ruby1.8 vulnerability (USN-20-1)");
  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:
"The Ruby developers discovered a potential Denial of Service
vulnerability in the CGI module (cgi.rb). Specially crafted CGI
requests could cause an infinite loop in the server process.
Repetitive attacks could use most of the available processor
resources, exhaust the number of allowed parallel connections in web
servers, or cause similar effects which render the service
unavailable.

There is no possibility of privilege escalation or data loss.

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:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:irb1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libbigdecimal-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libcurses-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdbm-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdl-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libdrb-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:liberb-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libgdbm-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libiconv-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libopenssl-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpty-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libracc-runtime-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libreadline-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:librexml-ruby1.8");
  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:libruby1.8-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsdbm-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsoap-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libstrscan-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsyslog-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtcltk-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtest-unit-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtk-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libwebrick-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libxmlrpc-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libyaml-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libzlib-ruby1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:rdoc1.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ri1.8");
  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:ruby1.8-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.8-elisp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ruby1.8-examples");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:4.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/11/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/01/15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2004-2019 Canonical, Inc. / NASL script (C) 2006-2016 Tenable Network Security, Inc.");
  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 (! ereg(pattern:"^(4\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 4.10", "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:"4.10", pkgname:"irb1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libbigdecimal-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libcurses-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libdl-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libdrb-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"liberb-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libgdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libiconv-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libopenssl-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libpty-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libracc-runtime-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libreadline-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"librexml-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libruby1.8-dbg", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libsdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libsoap-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libstrscan-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libsyslog-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libtcltk-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libtest-unit-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libtk-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libwebrick-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libxmlrpc-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libyaml-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libzlib-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"rdoc1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ri1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ruby1.8-dev", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ruby1.8-elisp", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ruby1.8-examples", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.1")) 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, "irb1.8 / libbigdecimal-ruby1.8 / libcurses-ruby1.8 / libdbm-ruby1.8 / etc");
}