Ubuntu 6.06 LTS / 6.10 / 7.04 / 7.10 : krb5 vulnerabilities (USN-587-1)

2008-03-19T00:00:00
ID UBUNTU_USN-587-1.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2008-2019 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-02-02T00:00:00

Description

It was discovered that krb5 did not correctly handle certain krb4 requests. An unauthenticated remote attacker could exploit this flaw by sending a specially crafted traffic, which could expose sensitive information, cause a crash, or execute arbitrary code. (CVE-2008-0062, CVE-2008-0063)

A flaw was discovered in the kadmind service

                                        
                                            #%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-587-1. 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(31625);
  script_version("1.18");
  script_cvs_date("Date: 2019/08/02 13:33:01");

  script_cve_id("CVE-2008-0062", "CVE-2008-0063", "CVE-2008-0947");
  script_bugtraq_id(28302, 28303);
  script_xref(name:"USN", value:"587-1");

  script_name(english:"Ubuntu 6.06 LTS / 6.10 / 7.04 / 7.10 : krb5 vulnerabilities (USN-587-1)");
  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 krb5 did not correctly handle certain krb4
requests. An unauthenticated remote attacker could exploit this flaw
by sending a specially crafted traffic, which could expose sensitive
information, cause a crash, or execute arbitrary code. (CVE-2008-0062,
CVE-2008-0063)

A flaw was discovered in the kadmind service's handling of file
descriptors. An unauthenticated remote attacker could send specially
crafted requests that would cause a crash, resulting in a denial of
service. Only systems with configurations allowing large numbers of
open file descriptors were vulnerable. (CVE-2008-0947).

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/587-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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_cwe_id(119, 189);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:krb5-admin-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:krb5-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:krb5-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:krb5-ftpd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:krb5-kdc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:krb5-rsh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:krb5-telnetd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:krb5-user");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkadm55");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkrb5-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkrb5-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkrb53");
  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:"cpe", value:"cpe:/o:canonical:ubuntu_linux:7.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:7.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/03/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/03/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2008-2019 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:"^(6\.06|6\.10|7\.04|7\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 6.10 / 7.04 / 7.10", "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:"krb5-admin-server", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-clients", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-doc", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-ftpd", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-kdc", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-rsh-server", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-telnetd", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-user", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libkadm55", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libkrb5-dev", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libkrb53", pkgver:"1.4.3-5ubuntu0.7")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-admin-server", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-clients", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-doc", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-ftpd", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-kdc", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-rsh-server", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-telnetd", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-user", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libkadm55", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libkrb5-dbg", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libkrb5-dev", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libkrb53", pkgver:"1.4.3-9ubuntu1.6")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"krb5-admin-server", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"krb5-clients", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"krb5-doc", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"krb5-ftpd", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"krb5-kdc", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"krb5-rsh-server", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"krb5-telnetd", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"krb5-user", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"libkadm55", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"libkrb5-dbg", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"libkrb5-dev", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"libkrb53", pkgver:"1.4.4-5ubuntu3.4")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"krb5-admin-server", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"krb5-clients", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"krb5-doc", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"krb5-ftpd", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"krb5-kdc", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"krb5-rsh-server", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"krb5-telnetd", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"krb5-user", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libkadm55", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libkrb5-dbg", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libkrb5-dev", pkgver:"1.6.dfsg.1-7ubuntu0.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"libkrb53", pkgver:"1.6.dfsg.1-7ubuntu0.1")) 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, "krb5-admin-server / krb5-clients / krb5-doc / krb5-ftpd / krb5-kdc / etc");
}