4
votes
1answer
103 views

Why would a user agent string be executed?

I'm having trouble understanding how a particular XSS vulnerability might arise in the real world. Guides for two of the exercises on hackthissite.org: ...
1
vote
2answers
200 views

What hacking risks a site has if it has no input boxes?

I recently posted a question about recovery of website from XSS attacks, http://stackoverflow.com/questions/20759081/how-to-recover-a-site-after-an-xss-attack... Doing a bit more digging online, i ...
41
votes
3answers
3k views

I found obfuscated code in a comment on my blog. What should I do?

Today I was checking comments on my blog and I found a strange comment, here is the exact text <script>var ...
2
votes
3answers
222 views

Is + as an alternative to %20 an attack vector?

I was reading a Q&A on enabling + characters in URLs for Sitecore CMS, and the answer states: ASPNET application does not allow using “+” from the security point of view e.g. preventing SQL or ...
3
votes
1answer
233 views

How did the Tumblr worm spread?

Recently Tumblr was hit by a fast-spreading worm. How did the worm work? What was the vulnerability in Tumblr that it exploired? Did it exploit a XSS vulnerability in Tumblr? A CSRF vulnerability ...
6
votes
3answers
3k views

Is it possible to inject HTML into image to provoke XSS?

Some answers mention that it's possible to inject attacker-controlled HTML into images and therefore provoke XSS. I guess that this HTML will be processed by browser only if hole exists in browser. ...
-1
votes
2answers
169 views

Is it Illegal to break out of a forum post by using CSS for example?

Is it illegal in the UK to post styling that breaks out of a post? For instance, if styling were allowed here and I were to use it to change some stackexchange pictures on this page, would that be ...