Vulnerabilities > CVE-2006-5229 - Information Exposure vulnerability in Openbsd Openssh 4.1

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description) 
{
  script_id(22466);
  script_version("1.30");
  script_cvs_date("Date: 2018/07/16 14:09:13");

  script_cve_id("CVE-2006-4924", "CVE-2006-4925", "CVE-2006-5051", "CVE-2006-5052", "CVE-2006-5229", "CVE-2007-3102", "CVE-2008-4109");
  script_bugtraq_id(20216, 20241, 20245);

  script_name(english:"OpenSSH < 4.4 Multiple Vulnerabilities");
  script_summary(english:"Checks version number of OpenSSH");
 
  script_set_attribute(attribute:"synopsis", value:
"The remote SSH server is affected by multiple vulnerabilities." );
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of OpenSSH installed on the
remote host is affected by multiple vulnerabilities :

  - A race condition exists that may allow an
    unauthenticated, remote attacker to crash the service 
    or, on portable OpenSSH, possibly execute code on the 
    affected host.  Note that successful exploitation 
    requires that GSSAPI authentication be enabled.
    
  - A flaw exists that may allow an attacker to determine 
    the validity of usernames on some platforms. Note that 
    this issue requires that GSSAPI authentication be 
    enabled.

  - When SSH version 1 is used, an issue can be triggered 
    via an SSH packet that contains duplicate blocks that 
    could result in a loss of availability for the service.

  - On Fedora Core 6 (and possibly other systems), an
    unspecified vulnerability in the
    linux_audit_record_event() function allows remote
    attackers to inject incorrect information into
    audit logs.");

  script_set_attribute(attribute:"see_also", value:"http://www.openssh.com/txt/release-4.4" );
  script_set_attribute(attribute:"solution", value:
"Upgrade to OpenSSH 4.4 or later." );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(264, 362, 399);
  script_set_attribute(attribute:"plugin_publication_date", value: "2006/09/28");
  script_set_attribute(attribute:"vuln_publication_date", value: "2006/09/28");
  script_set_attribute(attribute:"plugin_type", value: "remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:openbsd:openssh");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");
  script_copyright(english:"This script is Copyright (C) 2006-2018 Tenable Network Security, Inc.");
  script_dependencies("ssh_detect.nasl");
  script_require_ports("Services/ssh", 22);
  exit(0);
}

include("backport.inc");
include("global_settings.inc");
include("misc_func.inc");

# Ensure the port is open.
port = get_service(svc:"ssh", exit_on_fail:TRUE);

# Get banner for service.
banner = get_kb_item_or_exit("SSH/banner/"+port);

bp_banner = tolower(get_backport_banner(banner:banner));
if ("openssh" >!< bp_banner) exit(0, "The SSH service on port "+port+" is not OpenSSH.");
if (backported) exit(1, "The banner from the OpenSSH server on port "+port+" indicates patches may have been backported.");

if (!get_kb_item("Settings/PCI_DSS"))
{
  auth = get_kb_item_or_exit("SSH/supportedauth/" + port);
  if ("gssapi" >!< auth) exit(0, "The SSH service on port "+port+" doesn't support GSSAPI.");
}

if (bp_banner =~ "openssh[-_]([0-3]\.|4\.[0-3]([^0-9]|$))")
  security_hole(port);

#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");


if (description)
{
  script_id(55992);
  script_version("1.17");
  script_cvs_date("Date: 2018/07/31 17:27:54");

  script_cve_id(
    "CVE-2000-0525",
    "CVE-2000-1169",
    "CVE-2001-0361",
    "CVE-2001-0529",
    "CVE-2001-0572",
    "CVE-2001-0816",
    "CVE-2001-0872",
    "CVE-2001-1380",
    "CVE-2001-1382",
    "CVE-2001-1459",
    "CVE-2001-1507",
    "CVE-2001-1585",
    "CVE-2002-0083",
    "CVE-2002-0575",
    "CVE-2002-0639",
    "CVE-2002-0640",
    "CVE-2002-0765",
    "CVE-2003-0190",
    "CVE-2003-0386",
    "CVE-2003-0682",
    "CVE-2003-0693",
    "CVE-2003-0695",
    "CVE-2003-0786",
    "CVE-2003-0787",
    "CVE-2003-1562",
    "CVE-2004-0175",
    "CVE-2004-1653",
    "CVE-2004-2069",
    "CVE-2004-2760",
    "CVE-2005-2666",
    "CVE-2005-2797",
    "CVE-2005-2798",
    "CVE-2006-0225",
    "CVE-2006-4924",
    "CVE-2006-4925",
    "CVE-2006-5051",
    "CVE-2006-5052",
    "CVE-2006-5229",
    "CVE-2006-5794",
    "CVE-2007-2243",
    "CVE-2007-2768",
    "CVE-2007-3102",
    "CVE-2007-4752",
    "CVE-2008-1483",
    "CVE-2008-1657",
    "CVE-2008-3259",
    "CVE-2008-4109",
    "CVE-2008-5161"
  );
  script_bugtraq_id(32319);
  script_xref(name:"CERT", value:"958563");

  script_name(english:"SunSSH < 1.1.1 / 1.3 CBC Plaintext Disclosure");
  script_summary(english:"Checks SSH banner");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The SSH service running on the remote host has an information
disclosure vulnerability."
  );
  script_set_attribute(
    attribute:"description",
    value:
"The version of SunSSH running on the remote host has an information
disclosure vulnerability.  A design flaw in the SSH specification
could allow a man-in-the-middle attacker to recover up to 32 bits of
plaintext from an SSH-protected connection in the standard
configuration.  An attacker could exploit this to gain access to
sensitive information.

Note that this version of SunSSH is also prone to several additional
issues but Nessus did not test for them." );

  # http://web.archive.org/web/20090523091544/http://www.cpni.gov.uk/docs/vulnerability_advisory_ssh.txt
  script_set_attribute(attribute:"see_also",value:"http://www.nessus.org/u?4984aeb9");
  # http://hub.opensolaris.org/bin/view/Community+Group+security/SSH#HHistoryofSunSSH
  script_set_attribute(attribute:"see_also",value:"http://www.nessus.org/u?b679208a");
  script_set_attribute(attribute:"see_also",value:"http://blogs.oracle.com/janp/entry/on_sunssh_versioning");
  script_set_attribute(
    attribute:"solution",
    value:"Upgrade to SunSSH 1.1.1 / 1.3 or later"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC: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_core", value:"true");
  script_cwe_id(16, 20, 22, 189, 200, 255, 264, 287, 310, 362, 399);
  script_set_attribute(attribute:"vuln_publication_date",value:"2008/11/17");
  script_set_attribute(attribute:"patch_publication_date",value:"2008/12/11");
  script_set_attribute(attribute:"plugin_publication_date",value:"2011/08/29");
  script_set_attribute(attribute:"plugin_type",value:"remote");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2011-2018 Tenable Network Security, Inc.");

  script_dependencies("ssh_detect.nasl");
  script_require_ports("Services/ssh");

  exit(0);
}

include("global_settings.inc");
include("misc_func.inc");

# Ensure the port is open.
port = get_service(svc:"ssh", default:22, exit_on_fail:TRUE);

# Get banner for service.
banner = get_kb_item_or_exit("SSH/banner/" + port);

# Check that we're using SunSSH.
if ('sun_ssh' >!< tolower(banner))
  exit(0, "The SSH service on port " + port + " is not SunSSH.");

# Check the version in the banner.
match = eregmatch(string:banner, pattern:"sun_ssh[-_]([0-9.]+)$", icase:TRUE);
if (isnull(match))
  exit(1, "Could not parse the version string from the banner on port " + port + ".");
else
  version = match[1];

# the Oracle (Sun) blog above explains how the versioning works. we could
# probably explicitly check for each vulnerable version if it came down to it
if (
  ver_compare(ver:version, fix:'1.1.1', strict:FALSE) == -1 ||
  version == '1.2'
)
{
  if (report_verbosity > 0)
  {
    report =
      '\n  Version source    : ' + banner +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : 1.1.1 / 1.3\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
}
else exit(0, "The SunSSH server on port "+port+" is not affected as it's version "+version+".");