oss-security - Re: CVE Request: Advanced Electron Forums (AEF) 1.0.9 <= Cross Site Request Forgery (CSRF) Vulnerability

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Date: Fri, 30 Sep 2011 10:38:33 -0400 (EDT)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE Request: Advanced Electron Forums (AEF) 1.0.9 <= Cross Site Request Forgery (CSRF) Vulnerability

Please use CVE-2011-3582

Thanks.

-- 
    JB

----- Original Message -----
> Advanced Electron Forums (AEF) 1.0.9 <= Cross Site Request Forgery
> (CSRF) Vulnerability
> 
> 
> 
> 1. OVERVIEW
> 
> The Advanced Electron Forums (AEF)  1.0.9 <= versions are vulnerable
> to Cross Site Request Forgery (CSRF).
> 
> 
> 2. BACKGROUND
> 
> AEF has a very simple and easy to use Administration Panel and
> installing this software is a piece of cake! You can install new
> themes, customize themes the way you want. The User Control Panel has
> a simple yet beautiful interface where users can set their
> preferences
> for the board.
> 
> 
> 3. VULNERABILITY DESCRIPTION
> 
> Advanced Electron Forums (AEF) 1.0.9 <=  versions contain a flaw that
> allows a remote Cross-site Request Forgery (CSRF / XSRF) attack. The
> flaw exists because the application does not require multiple steps
> or
> explicit confirmation for sensitive transactions for majority of
> administrator functions such as adding new user, assigning user to
> administrative privilege. By using a crafted URL, an attacker may
> trick the victim into visiting to his web page to take advantage of
> the trust relationship between the authenticated victim and the
> application. Such an attack could trick the victim into executing
> arbitrary commands in the context of their session with the
> application, without further prompting or verification.
> 
> 
> 4. VERSIONS AFFECTED
> 
> 1.0.9 <=
> 
> 
> 5. PROOF-OF-CONCEPT/EXPLOIT
> 
> The following request ecalates a normal user to an administrator.
> 
> [REQUEST]
> POST /aef/index.php?act=editprofile&uid=2 HTTP/1.1
> 
> username=tester&email=tester%40yehg.net&u_member_group=1&realname=&title=&location=&gender=1&privatetext=&icq=&yim=&msn=&aim=&www=&sig=&editprofile=Edit+Profile
> [/REQUEST]
> 
> 
> 6. SOLUTION
> 
> Partial fix is available.
> The vendor released a single patch for the provided vulnerable
> EditProfile functionality.
> http://www.anelectron.com/downloads/index.php?act=downloadattach&atid=59
> 
> 
> 7. VENDOR
> 
> Electron Inc.
> http://www.anelectron.com/
> 
> 
> 8. CREDIT
> 
> This vulnerability was discovered by Aung Khant, http://yehg.net, YGN
> Ethical Hacker Group, Myanmar.
> 
> 
> 9. DISCLOSURE TIME-LINE
> 
> 2010-12-14: notified vendor through email, website contact form
> submission
> 2011-05-17: vendor released aef 1.0.9 without the CSRF fix
> 2011-09-06: vendor released separate patch about the CSRF fix
> 2011-09-26: vulnerability disclosed
> 
> 
> 10. REFERENCES
> 
> Original Advisory URL:
> http://yehg.net/lab/pr0js/advisories/[aef-1.x]_cross_site_request_forgery
> CSRF Wiki:
> https://secure.wikimedia.org/wikipedia/en/wiki/Cross-site_request_forgery
> 
> 
> 
> #yehg [2011-09-26]
>

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