A weakness has been reported in GTK+, which can be exploited by malicious people with physical access to bypass certain security restrictions.
The weakness is caused due to the "gdk_window_begin_implicit_paint()" function in gdk/gdkwindow.c potentially trying to paint on non-existent foreign windows. This can lead to e.g. a crash in gnome-screensaver, which can be exploited to bypass the screen lock.
The weakness is reported in version 2.18.4. Other versions may also be affected.
Solution: Update to version 2.18.5.
Provided and/or discovered by: Crashes reported by e.g. Richard Ssekibuule and various others.
Original Advisory: http://ftp.gnome.org/pub/gnome/sources/gtk+/2.18/gtk+-2.18.5.news
Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this
information to email@example.com
Subject: GTK+ "gdk_window_begin_implicit_paint()" Foreign Windows Weakness
No posts yet
You must be logged in to post a comment.
Secunia Customer Login
Not a customer already?
Learn more about how our market leading Vulnerability Management solutions can help you manage risk and ensure compliance.