Ubuntu 5.04 : courier vulnerability (USN-174-1)

#%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-174-1. 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(20584);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2005-2151");
  script_xref(name:"USN", value:"174-1");

  script_name(english:"Ubuntu 5.04 : courier vulnerability (USN-174-1)");
  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:
"A Denial of Service vulnerability has been discovered in the Courier
mail server. Due to a flawed status code check, failed DNS (domain
name service) queries for SPF (sender policy framework) were not
handled properly and could lead to memory corruption. A malicious DNS
server could exploit this to crash the Courier server.

However, SPF is not enabled by default, so you are only vulnerable if
you explicitly enabled it.

The Ubuntu 4.10 version of courier is not affected by this.

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:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-authdaemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-authmysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-authpostgresql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-faxmail");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-imap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-imap-ssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-maildrop");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-mlm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-mta");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-mta-ssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-pcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-pop");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-pop-ssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-ssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:courier-webadmin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:sqwebmail");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.04");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/08/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/01/15");
  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:"^(5\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 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:"5.04", pkgname:"courier-authdaemon", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-authmysql", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-authpostgresql", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-base", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-doc", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-faxmail", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-imap", pkgver:"3.0.8-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-imap-ssl", pkgver:"3.0.8-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-ldap", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-maildrop", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-mlm", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-mta", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-mta-ssl", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-pcp", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-pop", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-pop-ssl", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-ssl", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"courier-webadmin", pkgver:"0.47-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"sqwebmail", pkgver:"0.47-3ubuntu1.1")) 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, "courier-authdaemon / courier-authmysql / courier-authpostgresql / etc");
}