| code | #
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(88592);
script_version("1.9");
script_cvs_date("Date: 2019/11/20");
script_cve_id("CVE-2016-1296");
script_bugtraq_id(81434);
script_xref(name:"CISCO-BUG-ID", value:"CSCuw32090");
script_xref(name:"CISCO-BUG-ID", value:"CSCux00848");
script_xref(name:"CISCO-SA", value:"cisco-sa-20160119-wsa");
script_name(english:"Cisco Web Security Appliance Proxy Restrictions Bypass");
script_summary(english:"Checks the WSA version.");
script_set_attribute(attribute:"synopsis", value:
"The remote security appliance is affected by a security feature bypass
vulnerability.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version, the Cisco Web Security
Appliance (WSA) running on the remote host is affected by a security
feature bypass vulnerability that allows an unauthenticated, remote
attacker to bypass proxy restrictions via improper or malformed HTTP
methods.");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160119-wsa
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?689662ba");
script_set_attribute(attribute:"solution", value:
"No patch currently exists. Contact Cisco for a patch or workaround.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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:L/PR:N/UI:N/S:U/C:N/I:H/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-2016-1296");
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:"2016/01/19");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/05");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/h:cisco:web_security_appliance");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CISCO");
script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("cisco_wsa_version.nasl");
script_require_keys("Settings/ParanoidReport", "Host/AsyncOS/Cisco Web Security Appliance/DisplayVersion", "Host/AsyncOS/Cisco Web Security Appliance/Version");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
display_ver = get_kb_item_or_exit('Host/AsyncOS/Cisco Web Security Appliance/DisplayVersion');
ver = get_kb_item_or_exit('Host/AsyncOS/Cisco Web Security Appliance/Version');
# Device might not even be configured to prevent proxied traffic
# and Cisco doesn't seem like they want to patch this anytime soon
if (report_paranoia < 2) audit(AUDIT_PARANOID);
display_fix = FALSE;
if (ver == "8.5.3-055")
display_fix = 'No fix has been supplied by Cisco.';
else if (ver == "9.1.0-000")
display_fix = 'No fix has been supplied by Cisco.';
else if (ver == "9.5.0-235")
display_fix = 'No fix has been supplied by Cisco.';
else
audit(AUDIT_INST_VER_NOT_VULN, 'Cisco WSA', display_ver);
if (display_fix)
{
if (report_verbosity > 0)
{
report =
'\n Installed version : ' + display_ver +
'\n Solution : ' + display_fix +
'\n';
security_warning(port:0, extra:report);
}
else security_warning(0);
exit(0);
}
else audit(AUDIT_INST_VER_NOT_VULN, 'Cisco WSA', display_ver);
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