CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
EPSS
Percentile
49.6%
The remote Cisco device is affected by a security bypass vulnerability due to physical-interface ACLs superseding tunnel-interface ACLs. An authenticated, remote attacker connected to a tunnel interface can exploit this to bypass intended network-traffic restrictions.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(86951);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/12/01");
script_cve_id("CVE-2015-6366");
script_bugtraq_id(77569);
script_xref(name:"CISCO-BUG-ID", value:"CSCur01042");
script_xref(name:"CISCO-SA", value:"cisco-sa-20151112-ios2");
script_name(english:"Cisco IOS Tunnel Interfaces Security Bypass");
script_summary(english:"Checks the version of Cisco IOS");
script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
script_set_attribute(attribute:"description", value:
"The remote Cisco device is affected by a security bypass vulnerability
due to physical-interface ACLs superseding tunnel-interface ACLs. An
authenticated, remote attacker connected to a tunnel interface can
exploit this to bypass intended network-traffic restrictions.");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151112-ios2
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3a7aa18b");
script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID
CSCur01042.");
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_attribute(attribute:"cvss_score_source", value:"CVE-2015-6366");
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:"2015/11/12");
script_set_attribute(attribute:"patch_publication_date", value:"2015/11/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/11/19");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:ios");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CISCO");
script_copyright(english:"This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("cisco_ios_version.nasl");
script_require_keys("Host/Cisco/IOS/Version", "Settings/ParanoidReport");
exit(0);
}
include("audit.inc");
include("cisco_func.inc");
version = get_kb_item_or_exit('Host/Cisco/IOS/Version');
flag = 0;
if (report_paranoia < 2) audit(AUDIT_PARANOID);
if (version == "15.2(4)M6") flag++;
if (version == "15.4(3)S") flag++;
if (flag)
{
if (report_verbosity > 0)
{
report =
'\n Cisco bug ID : CSCur01042' +
'\n Installed release : ' + version +
'\n';
security_warning(port:0, extra:report);
}
else security_warning(port:0);
}
else audit(AUDIT_HOST_NOT, "affected");