CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
46.3%
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.
#
# (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);
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
Percentile
46.3%