Ubuntu 4.10 / 5.04 : openssh vulnerability (USN-209-1)

#%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-209-1. 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(20626);
  script_version("1.17");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2005-2798");
  script_xref(name:"USN", value:"209-1");

  script_name(english:"Ubuntu 4.10 / 5.04 : openssh vulnerability (USN-209-1)");
  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:
"An information disclosure vulnerability has been found in the SSH
server. When the GSSAPIAuthentication option was enabled, the SSH
server could send GSSAPI credentials even to users who attempted to
log in with a method other than GSSAPI. This could inadvertently
expose these credentials to an untrusted user.

Please note that this does not affect the default configuration of the
SSH server.

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:P/I:N/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openssh-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openssh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:4.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.04");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/10/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/01/15");
  script_set_attribute(attribute:"vuln_publication_date", value:"2005/09/01");
  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:"^(4\.10|5\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 4.10 / 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:"4.10", pkgname:"openssh-client", pkgver:"3.8.1p1-11ubuntu3.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"openssh-server", pkgver:"3.8.1p1-11ubuntu3.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ssh", pkgver:"3.8.1p1-11ubuntu3.2")) flag++;
if (ubuntu_check(osver:"4.10", pkgname:"ssh-askpass-gnome", pkgver:"3.8.1p1-11ubuntu3.2")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"openssh-client", pkgver:"3.9p1-1ubuntu2.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"openssh-server", pkgver:"3.9p1-1ubuntu2.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"ssh", pkgver:"3.9p1-1ubuntu2.1")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"ssh-askpass-gnome", pkgver:"3.9p1-1ubuntu2.1")) 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, "openssh-client / openssh-server / ssh / ssh-askpass-gnome");
}