Full Disclosure mailing list archives
Re: Predefined Post Authentication Session ID Vulnerability
From: Jann Horn <jannhorn () googlemail com>
Date: Fri, 13 Jul 2012 01:06:10 +0200
On Wed, Jul 11, 2012 at 11:34:11AM +0300, Gokhan Muharremoglu wrote:
Vulnerability Name: Predefined Post Authentication Session ID Vulnerability Type: Improper Session Handling Impact: Session Hijacking Level: Medium Date: 10.07.2012 Vendor: Vendor-neutral Issuer: Gokhan Muharremoglu E-mail: gokhan.muharremoglu () iosec org VULNERABILITY If a web application starts a session and defines a session id before a user authenticated, this session id must be changed after a successful authentication. If web application uses the same session id before and after authentication, any legitimate user who has gained the "before authentication" session id can hijack future "after authentication" sessions too.
Uh, so, erm, you assume that someone can steal my cookie/set it/whatever although the Same Origin Policy should clearly not allow that, and then, after I have logged in, he can't just steal my cookie? Unless you allow setting the session-ID via an URL or so (which would IMO be pretty stupid), I can't see how this is a realistic, vendor-neutral attack. Could you explain this a bit better? I don't get it.
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Current thread:
- Predefined Post Authentication Session ID Vulnerability Gokhan Muharremoglu (Jul 11)
- Re: Predefined Post Authentication Session ID Vulnerability Benji (Jul 11)
- Re: Predefined Post Authentication Session ID Vulnerability Levent Kayan (Jul 11)
- Re: Predefined Post Authentication Session ID Vulnerability Gökhan Muharremoğlu (Jul 12)
- Re: Predefined Post Authentication Session ID Vulnerability Benji (Jul 12)
- Re: Predefined Post Authentication Session ID Vulnerability Jann Horn (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Gokhan Muharremoglu (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Benji (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Gage Bystrom (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Gokhan Muharremoglu (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Gage Bystrom (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Tim (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Gage Bystrom (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Григорий Братислава (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Григорий Братислава (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Douglas Huff (Jul 16)
- Re: Predefined Post Authentication Session ID Vulnerability Gokhan Muharremoglu (Jul 13)
- Re: Predefined Post Authentication Session ID Vulnerability Benji (Jul 11)