Cisco Small Business RV Series Authentication Bypass and Command Injection
Description
This module exploits an authentication bypass (CVE-2021-1472) and command injection (CVE-2021-1473) in the Cisco Small Business RV series of VPN/routers. The device does not adequately verify the credentials in the HTTP Authorization field when requests are made to the /upload endpoint. Then the upload.cgi binary will use the contents of the HTTP Cookie field as part of a `curl` request aimed at an internal endpoint. The curl request is executed using `popen` and allows the attacker to inject commands via the Cookie field. A remote and unauthenticated attacker using this module is able to achieve code execution as `www-data`. This module affects the RV340, RV340w, RV345, and RV345P using firmware versions 1.0.03.20 and below.
Author(s)
- Takeshi Shiomitsu
- jbaines-r7
Platform
Linux,Unix
Architectures
cmd, armle
Development
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/cisco_rv_series_authbypass_and_rce
msf exploit(cisco_rv_series_authbypass_and_rce) > show targets
...targets...
msf exploit(cisco_rv_series_authbypass_and_rce) > set TARGET < target-id >
msf exploit(cisco_rv_series_authbypass_and_rce) > show options
...show and set options...
msf exploit(cisco_rv_series_authbypass_and_rce) > exploit
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