Ubuntu 6.06 LTS / 6.10 / 7.04 / 7.10 : openssh vulnerability (USN-597-1)

2008-04-04T00:00:00
ID UBUNTU_USN-597-1.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 2019-11-02T00:00:00

Description

Timo Juhani Lindfors discovered that the OpenSSH client, when port forwarding was requested, would listen on any available address family. A local attacker could exploit this flaw on systems with IPv6 enabled to hijack connections, including X11 forwards.

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.

                                        
                                            #%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-597-1. 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(31784);
  script_version("1.17");
  script_cvs_date("Date: 2019/08/02 13:33:02");

  script_cve_id("CVE-2008-1483");
  script_bugtraq_id(28444);
  script_xref(name:"USN", value:"597-1");

  script_name(english:"Ubuntu 6.06 LTS / 6.10 / 7.04 / 7.10 : openssh vulnerability (USN-597-1)");
  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:
"Timo Juhani Lindfors discovered that the OpenSSH client, when port
forwarding was requested, would listen on any available address
family. A local attacker could exploit this flaw on systems with IPv6
enabled to hijack connections, including X11 forwards.

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/597-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/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(264);

  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: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:"2008/04/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2008/04/04");
  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:"openssh-client", pkgver:"1:4.2p1-7ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"openssh-server", pkgver:"4.2p1-7ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ssh", pkgver:"4.2p1-7ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ssh-askpass-gnome", pkgver:"4.2p1-7ubuntu3.3")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"openssh-client", pkgver:"1:4.3p2-5ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"openssh-server", pkgver:"4.3p2-5ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"ssh", pkgver:"4.3p2-5ubuntu1.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"ssh-askpass-gnome", pkgver:"4.3p2-5ubuntu1.2")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"openssh-client", pkgver:"1:4.3p2-8ubuntu1.2")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"openssh-server", pkgver:"4.3p2-8ubuntu1.2")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"ssh", pkgver:"4.3p2-8ubuntu1.2")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"ssh-askpass-gnome", pkgver:"4.3p2-8ubuntu1.2")) flag++;
if (ubuntu_check(osver:"7.04", pkgname:"ssh-krb5", pkgver:"4.3p2-8ubuntu1.2")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"openssh-client", pkgver:"1:4.6p1-5ubuntu0.2")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"openssh-server", pkgver:"4.6p1-5ubuntu0.2")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ssh", pkgver:"4.6p1-5ubuntu0.2")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ssh-askpass-gnome", pkgver:"4.6p1-5ubuntu0.2")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ssh-krb5", pkgver:"4.6p1-5ubuntu0.2")) 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 / etc");
}