Updated Thursday, June 24, 2010 at 5:20 p.m. EST
A Twitter user has demonstrated a cross-site scripting (XSS) vulnerability on the microblogging platform that could allow an attacker to take over users' accounts or spread malware.
An Indonesian security researcher, using the alias “H4x0r-x0x” and Twitter handle “0wn3d_5ys,” discovered the vulnerability and demonstrated the bug using his own Twitter account.
In addition, the researcher on Monday announced details about the flaw on his blog.
The vulnerability affects the “application name” field on Twitter's application registration page, used by developers when setting up a new Twitter application.
“I haven't seen it used by attackers yet, but obviously that can change,” Kennedy said.
Visiting the researcher's Twitter account causes a pair of XSS alert boxes, followed by a user's browser being manipulated. The demonstration of the flaw also causes an animation from the film “The Matrix” to appear, followed by messages from the researcher, one of which states, “My Twitter Owned By : H4x0r-x0x..”
A Twitter spokesperson told SCMagazineUS.com on Thursday that the company is aware of the issue and has fixed it for new applications, but is still working to patch it in all programs.