Re: [Full-disclosure] CAPTCHA re-riding attack in https://google.com

2013-08-28 Thread Alex
I don't see a captcha bypass, all I see is a wget command with Cookie and Session ID and such. while true; do echo Yes, I am blind!; done Am 2013-08-26 18:04, schrieb kevin philips: Hi Adam, As discussed, this issue just a captcha bypass problem. Except this case, I don't know google

Re: [Full-disclosure] CAPTCHA re-riding attack in https://google.com

2013-08-27 Thread kevin philips
Hi Adam, As discussed, this issue just a captcha bypass problem. Except this case, I don't know google still uses this captcha somewhere or not :). Anyway, thank you Adam! Your reply is a very clear way to explain it. See more: https://www.owasp.org/index.php/Testing_for_Captcha_(OWASP-AT-008)

[Full-disclosure] CAPTCHA re-riding attack in https://google.com

2013-08-26 Thread kevin philips
folks, I found CAPTCHA re-riding attack issue in https://google.comhttps://webmail.vng.com.vn/owa/redir.aspx?C=MBNlh708PUqi0Yw_S1rA3DV_zLusddAIGU0MzN53skrHcqWc0vyF9vEfJjFxlgVRJcDYBVS8nws.URL=https%3a%2f%2fgoogle.com . PoC: Loop request with correct captcha (in this case the value of captcha is

Re: [Full-disclosure] CAPTCHA re-riding attack in https://google.com

2013-08-26 Thread adam
What exactly is a re-riding attack? Is that just another name for replay? And does this only work in the sorry/continue context for google.com? If so, I don't think it's really that big of a deal either. Repeated requests, typically, are the cause of the sorry/continue page, so I can't see how

Re: [Full-disclosure] captcha

2012-01-03 Thread Jan van Niekerk
On Sun, Jan 1, 2012 at 3:43 PM, ebhakt ebh...@gmail.com wrote: Hii guys, Hii Ebhakt I want to know the logic behind creating a captcha imagey I know how the servers are designed and what the captcha security does!! but how the captcha imagae is generated that's my main question !! The code

Re: [Full-disclosure] captcha

2012-01-03 Thread Ryan Chapman
Awesome topic, i'm looking forward to hearing alot more about this. There is Ted talking video explaining, but not into the security end of it. http://blog.ted.com/2011/12/06/massive-scale-online-collaboration-luis-von-ahn-on-ted-com/ On Mon, Jan 2, 2012 at 10:56, Jan van Niekerk

Re: [Full-disclosure] captcha

2012-01-02 Thread Nate Theis
Very carefully. On Jan 1, 2012 1:52 PM, ebhakt ebh...@gmail.com wrote: Hii guys, g Hii guys, I want to know the logic behind creating a captcha image I know how the servers are designed and what the captcha security does!! but how the captcha imagae is generated that's my main question !!

Re: [Full-disclosure] captcha

2012-01-02 Thread Dave
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 01/01/2012 13:43, ebhakt wrote: Hii guys, I want to know the logic behind creating a captcha image I know how the servers are designed and what the captcha security does!! but how the captcha imagae is generated that's my main question !!

[Full-disclosure] captcha

2012-01-01 Thread ebhakt
Hii guys, I want to know the logic behind creating a captcha image I know how the servers are designed and what the captcha security does!! but how the captcha imagae is generated that's my main question !! Any ideas , guesses !! Just mail around !! Thanks