Ubuntu 4.10 / 5.04 : ruby1.8 vulnerability (USN-195-1)

2006-01-15T00:00:00
ID UBUNTU_USN-195-1.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2005-2019 Canonical, Inc. / NASL script (C) 2006-2016 Tenable Network Security, Inc.
Modified 2019-11-02T00:00:00

Description

The object oriented scripting language Ruby supports safely executing untrusted code with two mechanisms: safe level and taint flag on objects. Dr. Yutaka Oiwa discovered a vulnerability that allows Ruby methods to bypass these mechanisms. In systems which use this feature, this could be exploited to execute Ruby code beyond the restrictions specified in each safe level.

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.

                                        
                                            #%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-195-1. 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(20609);
  script_version("1.16");
  script_cvs_date("Date: 2019/08/02 13:33:00");

  script_cve_id("CVE-2005-2337");
  script_xref(name:"USN", value:"195-1");

  script_name(english:"Ubuntu 4.10 / 5.04 : ruby1.8 vulnerability (USN-195-1)");
  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 object oriented scripting language Ruby supports safely executing
untrusted code with two mechanisms: safe level and taint flag on
objects. Dr. Yutaka Oiwa discovered a vulnerability that allows Ruby
methods to bypass these mechanisms. In systems which use this feature,
this could be exploited to execute Ruby code beyond the restrictions
specified in each safe level.

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:P/I:P/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:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.04");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/10/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/01/15");
  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/22");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2005-2019 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|5\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 4.10 / 5.04", "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:"4.10", pkgname:"irb1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libbigdecimal-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libcurses-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libdl-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libdrb-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"liberb-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libgdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libiconv-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libopenssl-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libpty-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libracc-runtime-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libreadline-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"librexml-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libruby1.8-dbg", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libsdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libsoap-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libstrscan-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libsyslog-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libtcltk-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libtest-unit-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libtk-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libwebrick-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libxmlrpc-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libyaml-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"libzlib-ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"rdoc1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ri1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ruby1.8", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ruby1.8-dev", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ruby1.8-elisp", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ruby1.8-examples", pkgver:"1.8.1+1.8.2pre2-3ubuntu0.3")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"irb1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libbigdecimal-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libcurses-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libdl-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libdrb-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"liberb-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libgdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libiconv-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libopenssl-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libpty-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libracc-runtime-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libreadline-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"librexml-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libruby1.8-dbg", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libsdbm-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libsoap-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libstrscan-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libsyslog-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libtcltk-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libtest-unit-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libtk-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libwebrick-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libxmlrpc-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libyaml-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"libzlib-ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"rdoc1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"ri1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"ruby1.8", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"ruby1.8-dev", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"ruby1.8-elisp", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"ruby1.8-examples", pkgver:"1.8.1+1.8.2pre4-1ubuntu0.2")) 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, "irb1.8 / libbigdecimal-ruby1.8 / libcurses-ruby1.8 / libdbm-ruby1.8 / etc");
}