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X.Org Foundation develops the X-Window System, the standard window system for open source operating systems and devices. Most of the graphical user interfaces for Unix and Linux systems rely on it. At the 30th Chaos Communication Congress (CCC) in Germany, Ilja van Sprundel , a security researcher gave the presentation titled  " X11 Server security with being 'worse than it looks.'". He found more than 120 bugs in a few months. In the presentation, he has presented a 23 year old Stack overflow vulnerability in X11 System that could lead to privilege escalation to root and affects all versions of the X Server back to X11R5. Later today, X.Org Foundation released a security Advisory , states " A BDF font file containing a longer than expected string could overflow the buffer on the stack. Testing in X servers built with Stack Protector resulted in an immediate crash when reading a user-provided specially crafted font. " The flaw resides in a file at " libXfo...

When you sign up on Facebook, you have to enter an email address and that email address becomes your primary email address on Facebook. In a recent disclosure by a Security researcher, Stephen Sclafani - The Social Networking site Facebook was  vulnerable to disclosure of primary email address of any Facebook user to hackers and spammers . The flaw resides in the invitation mechanism of Facebook, using which one can invite his all contacts emails to Facebook for making new account. As shown in following screenshot, an invitation received on an email, where one need to click the Signup URL: After clicking that URL, invited user will be redirected to a signup page filled in with the email address and the name of a person who used the link to sign up for an account was displayed: There are two parameters in this URL, i.e "re" and "mid". According to Stephen changing some part of "mid" parameter can expose the email address of another user. http:/...