Full Disclosure mailing list archives
Re: [0 Day] XSS Persistent in Blogspot of Google
From: Elfius <elfius () gmail com>
Date: Sat, 26 Jan 2013 10:56:21 +1100
OGMMM WTFF 0DAY XSS Sorry, getting a bit tired of these. On 26 January 2013 02:50, ANTRAX <antrax.bt () gmail com> wrote:
Gynvael Coldwind, I know this and I posted a reply in Underc0de about that. http://underc0de.org/foro/hacking-showoff/xss-persistente-blogger-13978/ It isn't a critical bug but, despite that, this shouldn't happen.. Thanks all! --- Best Regards *ANTRAX* 2013/1/25 Gynvael Coldwind <gynvael () coldwind pl>Hey ANTRAX, JZ is correct, even in the template view the script is still executed only in the *.blogspot.com context, and not in the context of blogger.com- look at your first screenshot - it's clearly said there that the alert box popped up on *.blogspot.com. It's good to always alert(document.domain) to be sure of the context in which the script is executed. As you know, script executing in the context of the cookieless *. blogspot.com cannot interact / or steal cookies from blogger.com domain. So, to repeat what JZ already said - this is by design, it's not a bug, and no, you cannot attack an admin this way (unless you found some other way to execute that script in the context of blogger.com - in such case try reporting it again). Cheers, Gynvael Coldwind On Tue, Jan 22, 2013 at 1:11 AM, ANTRAX <antrax.bt () gmail com> wrote:I know JZ, but this vulnerability is in the post and no in the template. And this could be generated by blogger and affect to administrator! The blogger can edit, but haven't admin. If the blogger post some script, this affect to administrator. --- Saludos Cordiales *ANTRAX* www.antrax-labs.org 2013/1/21 Jakub Zoczek <zoczus () gmail com>Hi, *Execution of owner-supplied JavaScript on Blogger:* Blogger users are permitted to place custom JavaScript in their own blog templates and blog posts; our take on this is that blogs are user-generated content, not different from any third-party website on the Internet. Naturally, for your safety, we do employ spam and malware detection technologies - but we believe that the flexibility in managing your own content is essential to the success of our blogging platform. *Therefore, the ability to execute owner-supplied scripts on your own blog is not considered to be a vulnerability. That being said, the ability to inject arbitrary JavaScript onto somebody else’s blog would likely qualify for a reward! *Source <http://www.google.com/about/appsecurity/reward-program/>* * Peace, JZ On Tue, Jan 22, 2013 at 12:01 AM, ANTRAX <antrax.bt () gmail com> wrote:Hi all, I'm ANTRAX from Argentina, and I'm owner of www.underc0de.org Today, I going to shared with you about XSS in blogger. This is a very simple, but isn´t fix yet.. This bug could be exploited by bloggers without administrator permissons. Steps to reproduce the XSS: 1.- Create a new post in the blog and insert some script [image: Imágenes integradas 1] 2.- When the administrator enter in the administration panel in "templates" section, blogger automatically executed the script, because blogger have a mini-preview in "Ahora en el blog", then execute the script [image: Imágenes integradas 2] 3.- Ready! the script has been executed! [image: Imágenes integradas 3] Also, you can steal cookies! [image: Imágenes integradas 4] I reported to google about it, but they not fixed yet. Kind regards partners! *ANTRAX*_______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/-- gynvael.coldwind//vx_______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
_______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- [0 Day] XSS Persistent in Blogspot of Google ANTRAX (Jan 22)
- Re: [0 Day] XSS Persistent in Blogspot of Google Jakub Zoczek (Jan 22)
- Re: [0 Day] XSS Persistent in Blogspot of Google ANTRAX (Jan 22)
- Re: [0 Day] XSS Persistent in Blogspot of Google Gynvael Coldwind (Jan 25)
- Re: [0 Day] XSS Persistent in Blogspot of Google ANTRAX (Jan 25)
- Re: [0 Day] XSS Persistent in Blogspot of Google Elfius (Jan 27)
- Re: [0 Day] XSS Persistent in Blogspot of Google Michal Zalewski (Jan 28)
- Re: [0 Day] XSS Persistent in Blogspot of Google Guifre (Jan 29)
- Re: [0 Day] XSS Persistent in Blogspot of Google antisnatchor (Jan 29)
- Re: [0 Day] XSS Persistent in Blogspot of Google ANTRAX (Jan 22)
- Re: [0 Day] XSS Persistent in Blogspot of Google Jakub Zoczek (Jan 22)