Ubuntu 5.10 / 6.06 LTS / 6.10 : krb5 vulnerabilities (USN-449-1)

#%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-449-1. 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(28046);
  script_version("1.19");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2007-0956", "CVE-2007-0957", "CVE-2007-1216");
  script_xref(name:"USN", value:"449-1");

  script_name(english:"Ubuntu 5.10 / 6.06 LTS / 6.10 : krb5 vulnerabilities (USN-449-1)");
  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 krb5 telnet service did not appropriately verify user names. A
remote attacker could log in as the root user by requesting a
specially crafted user name. (CVE-2007-0956)

The krb5 syslog library did not correctly verify the size of log
messages. A remote attacker could send a specially crafted message and
execute arbitrary code with root privileges. (CVE-2007-0957)

The krb5 administration service was vulnerable to a double-free in the
GSS RPC library. A remote attacker could send a specially crafted
request and execute arbitrary code with root privileges.
(CVE-2007-1216).

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/449-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'D2ExploitPack');
  script_cwe_id(119);

  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: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:"2007/04/03");
  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:"krb5-admin-server", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"krb5-clients", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"krb5-doc", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"krb5-ftpd", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"krb5-kdc", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"krb5-rsh-server", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"krb5-telnetd", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"krb5-user", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libkadm55", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libkrb5-dev", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"libkrb53", pkgver:"1.3.6-4ubuntu0.2")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-admin-server", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-clients", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-doc", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-ftpd", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-kdc", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-rsh-server", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-telnetd", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"krb5-user", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libkadm55", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libkrb5-dev", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"libkrb53", pkgver:"1.4.3-5ubuntu0.3")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-admin-server", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-clients", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-doc", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-ftpd", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-kdc", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-rsh-server", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-telnetd", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"krb5-user", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libkadm55", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libkrb5-dbg", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libkrb5-dev", pkgver:"1.4.3-9ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"libkrb53", pkgver:"1.4.3-9ubuntu1.2")) 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, "krb5-admin-server / krb5-clients / krb5-doc / krb5-ftpd / krb5-kdc / etc");
}