BBCode tag "[php]" used to inject php code
I saw a somewhat "odd" alert today hit this web server, and am wondering if there are any circumstances under which this attack would have actually worked. The full request:
I broke the request up into multiple lines to prevent an overflow into the right part of the page, and I obfuscated the one embeded URL.
Decoded, the Javascript in the URL comes out to:
The "simulacre.org" site does not appear to be malicious or compromissed. The contact.php page does not appear to exist. (But the real contact form doesn't appear to work).
The PHP code looks a bit more interesting. After Base64 decoding, one gets to:

The code creates the function "ex", which then attempts to execute a command on the server using pretty much any different way that php may use to execute commands trying to bypass some restrictions that may have been put in place. However, I never see the $cmd string populated unless the exploit relies on register_globals which would be a stretch and odd given the careful command execution.
Anybody seeing this? Just another broken exploit? Or will this actually work against some old version of CMS "x"?
Postscript: Well, I was all proud to be able to post this and not cause any XSS issues in our diary. But turns out some AV filters triggered (like ClamAV) so I converted the code to images.
------ Johannes B. Ullrich, Ph.D. SANS Technology Institute Twitter
×
Diary Archives
Comments
www
Nov 17th 2022
4 months ago
EEW
Nov 17th 2022
4 months ago
qwq
Nov 17th 2022
4 months ago
mashood
Nov 17th 2022
4 months ago
isc.sans.edu
Nov 23rd 2022
4 months ago
isc.sans.edu
Nov 23rd 2022
4 months ago
isc.sans.edu
Dec 3rd 2022
3 months ago
isc.sans.edu
Dec 3rd 2022
3 months ago
<a hreaf="https://technolytical.com/">the social network</a> is described as follows because they respect your privacy and keep your data secure. The social networks are not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go.
<a hreaf="https://technolytical.com/">the social network</a> is not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go. The social networks only collect the minimum amount of information required for the service that they provide. Your personal information is kept private, and is never shared with other companies without your permission
isc.sans.edu
Dec 26th 2022
3 months ago
isc.sans.edu
Dec 26th 2022
3 months ago