Vulnerabilities > CVE-2015-6409 - Information Exposure vulnerability in Cisco Jabber 10.6(2)

047910
CVSS 5.9 - MEDIUM
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
NONE
Availability impact
NONE
network
high complexity
cisco
CWE-200
nessus
NVD
Published: 2015-12-26
Updated: 2024-11-21

Summary

Cisco Jabber 10.6.x, 11.0.x, and 11.1.x on Windows allows man-in-the-middle attackers to conduct STARTTLS downgrade attacks and trigger cleartext XMPP sessions via unspecified vectors, aka Bug ID CSCuw87419.

Vulnerable Configurations

Part Description Count
Application
Cisco
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Nessus

NASL familyWindows
NASL idCISCO_JABBER_CLIENT_CSCUW87419.NASL
descriptionThe version of Cisco Jabber for Windows installed on the remote host is 8.x, 9.x, 10.x, 11.0.x, or 11.1.x prior to 11.5. It is, therefore, affected by man-in-the-middle STARTTLS downgrade vulnerability due to improper checks to ensure the Extensible Messaging and Presence Protocol (XMPP) connection is established with Transport Layer Security (TLS). A man-in-the-middle attacker can exploit this to avoid TLS negotiation, resulting in the client establishing a cleartext XMPP connection.
last seen2020-06-01
modified2020-06-02
plugin id87954
published2016-01-15
reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/87954
titleCisco Jabber for Windows 8.x / 9.x / 10.x / 11.0.x / 11.1.x XMPP Connection MitM STARTTLS Downgrade (cisco-sa-20151224-jab)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(87954);
  script_version("1.8");
  script_cvs_date("Date: 2019/11/20");

  script_cve_id("CVE-2015-6409");
  script_xref(name:"CISCO-SA", value:"cisco-sa-19990111-ios-syslog");
  script_xref(name:"CISCO-BUG-ID", value:"CSCuw87419");

  script_name(english:"Cisco Jabber for Windows 8.x / 9.x / 10.x / 11.0.x / 11.1.x XMPP Connection MitM STARTTLS Downgrade (cisco-sa-20151224-jab)");
  script_summary(english:"Checks the version of Cisco Jabber for Windows.");

  script_set_attribute(attribute:"synopsis", value:
"The version of Cisco Jabber for Windows installed on the remote host
is affected by a man-in-the-middle STARTTLS downgrade vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Cisco Jabber for Windows installed on the remote host
is 8.x, 9.x, 10.x, 11.0.x, or 11.1.x prior to 11.5. It is, therefore,
affected by man-in-the-middle STARTTLS downgrade vulnerability due to
improper checks to ensure the Extensible Messaging and Presence
Protocol (XMPP) connection is established with Transport Layer
Security (TLS). A man-in-the-middle attacker can exploit this to avoid
TLS negotiation, resulting in the client establishing a cleartext XMPP
connection.");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dd3d4c70");
  script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/bugsearch/bug/CSCuw87419");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Cisco Jabber for Windows version 11.5 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-6409");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/12/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/12/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:jabber");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("cisco_jabber_client_installed.nbin");
  script_require_keys("SMB/Cisco Jabber for Windows/Installed");

  exit(0);
}

include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');

appname = "Cisco Jabber for Windows";
get_kb_item_or_exit("SMB/" + appname + "/Installed");

kb_installs = get_kb_list_or_exit("SMB/" + appname + "/*/Version");

# If only one install, don't bother branching
if (max_index(keys(kb_installs)) == 1)
{
  item = keys(kb_installs);
  kb_entry = item[0];
}
else
  kb_entry = branch(keys(kb_installs));

version = get_kb_item_or_exit(kb_entry);
kb_base = kb_entry - "/Version";
path = get_kb_item_or_exit(kb_base + "/Path");

ver_ui = get_kb_item(kb_base + "/Ver_UI");

if (ver_ui) report_version = ver_ui + ' (' + version + ')';
else report_version = version;

fixed_version = "11.5(0)";

# Affected versions: 8.x, 9.x, 10.x, 11.0.x, 11.1.x
if (version =~ "^(8|9|10)\.[0-9]+" || version =~ "^11\.(0|1)\.[0-9]+")
{
  port = get_kb_item("SMB/transport");
  if (!port) port = 445;

  if (report_verbosity > 0)
  {
    report =
      '\n  Path              : ' + path +
      '\n  Installed version : ' + report_version +
      '\n  Fixed version     : ' + fixed_version +
      '\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
}
else audit(AUDIT_INST_PATH_NOT_VULN, appname, report_version, path);

References