CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%
According to its self-reported version, Cisco Web Security Appliance (WSA) is affected by following vulnerability
Please see the included Cisco BIDs and Cisco Security Advisory for more information
#TRUSTED 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
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(126916);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/05/14");
script_cve_id("CVE-2019-1816");
script_bugtraq_id(108131);
script_xref(name:"CISCO-BUG-ID", value:"CSCvk68106");
script_xref(name:"CISCO-SA", value:"cisco-sa-20190501-wsa-privesc");
script_name(english:"Cisco Web Security Appliance Privilege Escalation Vulnerability");
script_summary(english:"Checks the version of Cisco Web Security Appliance (WSA)");
script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch");
script_set_attribute(attribute:"description", value:
"According to its self-reported version, Cisco Web Security Appliance
(WSA) is affected by following vulnerability
- A vulnerability in the log subscription subsystem of the
Cisco Web Security Appliance (WSA) could allow an
authenticated, local attacker to perform command
injection and elevate privileges to root.The
vulnerability is due to insufficient validation of user-
supplied input on the web and command-line interface. An
attacker could exploit this vulnerability by
authenticating to the affected device and injecting
scripting commands in the scope of the log subscription
subsystem. A successful exploit could allow the attacker
to execute arbitrary commands on the underlying
operating system and elevate privileges to root.
(CVE-2019-1816)
Please see the included Cisco BIDs and Cisco Security Advisory for
more information");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-wsa-privesc
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?de4d6664");
script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvk68106");
script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID
CSCvk68106");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1816");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_cwe_id(20);
script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/01");
script_set_attribute(attribute:"patch_publication_date", value:"2019/05/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/h:cisco:web_security_appliance");
script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:web_security_appliance");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:web_security_appliance");
script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:asyncos");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CISCO");
script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("cisco_wsa_version.nasl");
script_require_keys("Host/AsyncOS/Cisco Web Security Appliance/DisplayVersion", "Host/AsyncOS/Cisco Web Security Appliance/Version");
exit(0);
}
include('audit.inc');
include('cisco_workarounds.inc');
include('ccf.inc');
product_info = cisco::get_product_info(name:'Cisco Web Security Appliance (WSA)');
vuln_ranges = [
{ 'min_ver' : '10.1', 'fix_ver' : '10.1.4.017' },
{ 'min_ver' : '10.5', 'fix_ver' : '10.5.4.018' },
{ 'min_ver' : '11.5', 'fix_ver' : '11.5.2.020' },
{ 'min_ver' : '11.7', 'fix_ver' : '11.7.0.406' }
];
workarounds = make_list(CISCO_WORKAROUNDS['no_workaround']);
workaround_params = make_list();
reporting = make_array(
'port' , 0,
'severity' , SECURITY_HOLE,
'version' , product_info['version'],
'bug_id' , 'CSCvk68106'
);
cisco::check_and_report(
product_info:product_info,
workarounds:workarounds,
workaround_params:workaround_params,
reporting:reporting,
vuln_ranges:vuln_ranges
);
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
5.1%