Ubuntu 6.06 LTS / 7.04 / 7.10 : openssh vulnerabilities (USN-649-1)

#%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-649-1. 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(36855);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2006-5051", "CVE-2008-1657", "CVE-2008-4109");
  script_xref(name:"USN", value:"649-1");

  script_name(english:"Ubuntu 6.06 LTS / 7.04 / 7.10 : openssh vulnerabilities (USN-649-1)");
  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 the ForceCommand directive could be bypassed.
If a local user created a malicious ~/.ssh/rc file, they could execute
arbitrary commands as their user id. This only affected Ubuntu 7.10.
(CVE-2008-1657)

USN-355-1 fixed vulnerabilities in OpenSSH. It was discovered that the
fixes for this issue were incomplete. A remote attacker could attempt
multiple logins, filling all available connection slots, leading to a
denial of service. This only affected Ubuntu 6.06 and 7.04.
(CVE-2008-4109).

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/649-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_cwe_id(264, 362);

  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:"p-cpe:/a:canonical:ubuntu_linux:ssh-krb5");
  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:7.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:7.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/10/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 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|7\.04|7\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 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:"openssh-client", pkgver:"4.2p1-7ubuntu3.5")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"openssh-server", pkgver:"1:4.2p1-7ubuntu3.5")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ssh", pkgver:"4.2p1-7ubuntu3.5")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ssh-askpass-gnome", pkgver:"4.2p1-7ubuntu3.5")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"openssh-client", pkgver:"4.3p2-8ubuntu1.5")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"openssh-server", pkgver:"1:4.3p2-8ubuntu1.5")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"ssh", pkgver:"4.3p2-8ubuntu1.5")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"ssh-askpass-gnome", pkgver:"4.3p2-8ubuntu1.5")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"ssh-krb5", pkgver:"4.3p2-8ubuntu1.5")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"openssh-client", pkgver:"4.6p1-5ubuntu0.6")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"openssh-server", pkgver:"1:4.6p1-5ubuntu0.6")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ssh", pkgver:"4.6p1-5ubuntu0.6")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ssh-askpass-gnome", pkgver:"4.6p1-5ubuntu0.6")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ssh-krb5", pkgver:"4.6p1-5ubuntu0.6")) 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, "openssh-client / openssh-server / ssh / ssh-askpass-gnome / etc");
}