Ubuntu 5.10 / 6.06 LTS / 6.10 : openldap2.2 vulnerability (USN-384-1)

2007-11-10T00:00:00
ID UBUNTU_USN-384-1.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2007-2019 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-01-02T00:00:00

Description

Evgeny Legerov discovered that the OpenLDAP libraries did not correctly truncate authcid names. This situation would trigger an assert and abort the program using the libraries. A remote attacker could send specially crafted bind requests that would lead to an LDAP server denial of service.

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-384-1. 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(27967);
  script_version("1.15");
  script_cvs_date("Date: 2019/08/02 13:33:01");

  script_cve_id("CVE-2006-5779");
  script_bugtraq_id(20939);
  script_xref(name:"USN", value:"384-1");

  script_name(english:"Ubuntu 5.10 / 6.06 LTS / 6.10 : openldap2.2 vulnerability (USN-384-1)");
  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:
"Evgeny Legerov discovered that the OpenLDAP libraries did not
correctly truncate authcid names. This situation would trigger an
assert and abort the program using the libraries. A remote attacker
could send specially crafted bind requests that would lead to an LDAP
server denial of service.

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/384-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected ldap-utils, libldap-2.2-7 and / or slapd 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: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:ldap-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libldap-2.2-7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:slapd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.10");
  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:6.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/11/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2007-2019 Canonical, Inc. / NASL script (C) 2018 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 (! ereg(pattern:"^(5\.10|6\.06|6\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 5.10 / 6.06 / 6.10", "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:"5.10", pkgname:"ldap-utils", pkgver:"2.2.26-3ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libldap-2.2-7", pkgver:"2.2.26-3ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"slapd", pkgver:"2.2.26-3ubuntu0.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ldap-utils", pkgver:"2.2.26-5ubuntu2.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libldap-2.2-7", pkgver:"2.2.26-5ubuntu2.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"slapd", pkgver:"2.2.26-5ubuntu2.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"ldap-utils", pkgver:"2.2.26-5ubuntu3.1")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libldap-2.2-7", pkgver:"2.2.26-5ubuntu3.1")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"slapd", pkgver:"2.2.26-5ubuntu3.1")) 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, "ldap-utils / libldap-2.2-7 / slapd");
}