7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.973 High
EPSS
Percentile
99.9%
The version of Apache Struts installed on the remote host is 2.x prior to 2.5.26. It is, therefore, affected by a a remote code execution vulnerability in its OGNL evaluation functionality due to insufficient validation of user input. An unauthenticated, remote attacker can exploit this to execute arbitrary commands on an affected host.
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(143599);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/06/16");
script_cve_id("CVE-2020-17530");
script_xref(name:"IAVA", value:"2020-A-0565-S");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
script_xref(name:"CEA-ID", value:"CEA-2021-0025");
script_name(english:"Apache Struts 2.x < 2.5.26 RCE (S2-061)");
script_set_attribute(attribute:"synopsis", value:
"Apache Struts installed on the remote host is affected by a remote code execution vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of Apache Struts installed on the remote host is 2.x prior to 2.5.26. It is, therefore, affected by a
a remote code execution vulnerability in its OGNL evaluation functionality due to insufficient validation of user
input. An unauthenticated, remote attacker can exploit this to execute arbitrary commands on an affected host.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://cwiki.apache.org/confluence/display/WW/S2-061");
script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Struts version 2.5.26 or later. Alternatively, apply the workarounds as referenced in the vendor
security bulletins.");
script_set_attribute(attribute:"agent", value:"all");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-17530");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'Apache Struts 2 Forced Multi OGNL Evaluation');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/12/08");
script_set_attribute(attribute:"patch_publication_date", value:"2020/11/21");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:struts");
script_set_attribute(attribute:"stig_severity", value:"I");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2020-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("os_fingerprint.nasl", "struts_detect_win.nbin", "struts_detect_nix.nbin");
script_require_ports("installed_sw/Apache Struts", "installed_sw/Struts");
exit(0);
}
include('vcf.inc');
os = get_kb_item_or_exit('Host/OS');
win_local = 'windows' >< tolower(os);
app_info = vcf::get_app_info(app:'Apache Struts', win_local:win_local);
vcf::check_granularity(app_info:app_info, sig_segments:3);
constraints = [{'min_version':'2.0.0', 'fixed_version':'2.5.26'}];
vcf::check_version_and_report(
app_info:app_info,
constraints:constraints,
severity:SECURITY_HOLE
);
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.973 High
EPSS
Percentile
99.9%