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Linksys WRT54GL apply.cgi Command Execution

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Linksys WRT54GL apply.cgi Command Execution

Disclosed
01/18/2013
Created
05/30/2018

Description

Some Linksys Routers are vulnerable to an authenticated OS command injection in the Web Interface. Default credentials are admin/admin or admin/password. Since it is a blind os command injection vulnerability, there is no output for the executed command when using the cmd generic payload. A ping command against a controlled system could be used for testing purposes. The user must be prudent when using this module since it modifies the router configuration while exploitation, even when it tries to restore previous values.

Author(s)

  • Michael Messner <devnull@s3cur1ty.de>
  • juan vazquez <juan.vazquez@metasploit.com>

Platform

Linux,Unix

Development

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/linux/http/linksys_wrt54gl_apply_exec
msf exploit(linksys_wrt54gl_apply_exec) > show targets
    ...targets...
msf exploit(linksys_wrt54gl_apply_exec) > set TARGET < target-id >
msf exploit(linksys_wrt54gl_apply_exec) > show options
    ...show and set options...
msf exploit(linksys_wrt54gl_apply_exec) > exploit

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security

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