Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : openssl vulnerability (USN-750-1)

2009-04-23T00:00:00
ID UBUNTU_USN-750-1.NASL
Type nessus
Reporter Tenable
Modified 2016-05-27T00:00:00

Description

It was discovered that OpenSSL did not properly validate the length of an encoded BMPString or UniversalString when printing ASN.1 strings. If a user or automated system were tricked into processing a crafted certificate, an attacker could cause a denial of service via application crash in applications linked against OpenSSL.

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-750-1. 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(36907);
  script_version("$Revision: 1.12 $");
  script_cvs_date("$Date: 2016/05/27 14:37:18 $");

  script_cve_id("CVE-2009-0590");
  script_bugtraq_id(34256);
  script_xref(name:"USN", value:"750-1");

  script_name(english:"Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : openssl vulnerability (USN-750-1)");
  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:
"It was discovered that OpenSSL did not properly validate the length of
an encoded BMPString or UniversalString when printing ASN.1 strings.
If a user or automated system were tricked into processing a crafted
certificate, an attacker could cause a denial of service via
application crash in applications linked against OpenSSL.

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_cvss_temporal_vector("CVSS2#E:ND/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_cwe_id(119);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl0.9.8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libssl0.9.8-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openssl-doc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:7.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/03/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2009-2016 Canonical, Inc. / NASL script (C) 2009-2016 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:"^(6\.06|7\.10|8\.04|8\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 7.10 / 8.04 / 8.10", "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:"6.06", pkgname:"libssl-dev", pkgver:"0.9.8a-7ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libssl0.9.8", pkgver:"0.9.8a-7ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libssl0.9.8-dbg", pkgver:"0.9.8a-7ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"openssl", pkgver:"0.9.8a-7ubuntu0.7")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libssl-dev", pkgver:"0.9.8e-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libssl0.9.8", pkgver:"0.9.8e-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libssl0.9.8-dbg", pkgver:"0.9.8e-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"openssl", pkgver:"0.9.8e-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libssl-dev", pkgver:"0.9.8g-4ubuntu3.5")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libssl0.9.8", pkgver:"0.9.8g-4ubuntu3.5")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"libssl0.9.8-dbg", pkgver:"0.9.8g-4ubuntu3.5")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"openssl", pkgver:"0.9.8g-4ubuntu3.5")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"openssl-doc", pkgver:"0.9.8g-4ubuntu3.5")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libssl-dev", pkgver:"0.9.8g-10.1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libssl0.9.8", pkgver:"0.9.8g-10.1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"libssl0.9.8-dbg", pkgver:"0.9.8g-10.1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"openssl", pkgver:"0.9.8g-10.1ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"openssl-doc", pkgver:"0.9.8g-10.1ubuntu2.2")) 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, "libssl-dev / libssl0.9.8 / libssl0.9.8-dbg / openssl / openssl-doc");
}