CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
83.0%
According to its banner, the version of Appweb installed on the remote host is prior to 7.0.3. It is, therefore, have a logic flaw related to the authCondition function in http/httpLib.c. With a forged HTTP request, it is possible to bypass authentication for the form and digest login types.
Note that Nessus did not actually test for this issue, but instead has relied on the version in the server’s banner.
#
# (C) Tenable Network Security, Inc.
#
include('compat.inc');
if (description)
{
script_id(118710);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/07/26");
script_cve_id("CVE-2018-8715");
script_name(english:"Appweb < 7.0.3 authCondition Authentication Bypass Vulnerability");
script_set_attribute(attribute:"synopsis", value:
"The remote web server may be affected by a authentication bypass
vulnerability.");
script_set_attribute(attribute:"description", value:
"According to its banner, the version of Appweb installed on the
remote host is prior to 7.0.3. It is, therefore, have a logic flaw
related to the authCondition function in http/httpLib.c. With a
forged HTTP request, it is possible to bypass authentication for the
form and digest login types.
Note that Nessus did not actually test for this issue, but instead
has relied on the version in the server's banner.");
# https://github.com/embedthis/appweb/issues/610
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b2bbda6c");
script_set_attribute(attribute:"solution", value:
"Upgrade to Appweb version 7.0.3 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/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:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-8715");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/14");
script_set_attribute(attribute:"patch_publication_date", value:"2018/03/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/02");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:mbedthis_software:mbedthis_appweb_http_server");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Web Servers");
script_copyright(english:"This script is Copyright (C) 2018-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("appweb_server_detect.nasl", "os_fingerprint.nasl");
script_require_keys("www/appweb");
script_require_ports("Services/www", 80, 7777);
exit(0);
}
include("vcf.inc");
include("audit.inc");
include("http.inc");
port = get_http_port(default:80);
# Make sure this is Appweb.
get_kb_item_or_exit('www/'+port+'/appweb');
app_info = vcf::get_app_info(app:"Appweb", kb_ver:'www/appweb/'+port+'/version', service:FALSE);
constraints = [{ "min_version" : "4.0", "fixed_version" : "7.0.3" }];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING, strict:FALSE);
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
83.0%