Bug 815870 - (CVE-2013-1940) VUL-1: xorg-x11-server: CVE-2013-1940: Information disclosure due enabling events from hot-plug devices despite input from the device being momentarily disabled
VUL-1: xorg-x11-server: CVE-2013-1940: Information disclosure due enabling ev...
Status: RESOLVED DUPLICATE of bug 814653
Classification: Novell Products
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents
Other Other
: P5 - None : Normal
: ---
Assigned To: Stefan Dirsch
Security Team bot
Depends on:
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Reported: 2013-04-18 08:17 UTC by Alexander Bergmann
Modified: 2016-04-28 06:32 UTC (History)
1 user (show)

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Found By: ---
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Business Priority:
Blocker: ---
Marketing QA Status: ---
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Description Alexander Bergmann 2013-04-18 08:17:17 UTC
Public via oss-security:

Date: Thu, 18 Apr 2013 10:31:33 +0530
From: Huzaifa Sidhpurwala <huzaifas@redhat.com>
Subject: [oss-security] Xorg-x11-server: Information disclosure due enabling events from hot-plug devices despite input from the device being momentarily disabled

David Airlie and Peter Hutterer of Red Hat found an information
disclosure flaw was found in the way X.org X11 server used to register
new hot-plug devices, when X.org X11 server was instructed (for that
particular moment) not to receive input devices events. Formerly when
registering new input device, X.org X11 server simultaneously enabled
retrieval of input from the particular device (regardless of the
A local unsuspecting user, relying on the X.org X11 server disable
input feature it to properly prohibit acquiring of events from this
newly added hot-plug device, could supply a sensitive information that,
due the above bug, would become available to the physically proximate

Upstream patch:

Red Hat Bugzilla:

This issue has been assigned CVE-2013-1940
Comment 1 Alexander Bergmann 2013-04-18 08:19:24 UTC
From Huzaifa S. Sidhpurwala:
This issue has been classified as low impact because of the following reason(s):

In order to exploit this issue, the attacker needs to

- have an account on the target machine, or otherwise be able to start an app listening for key events.
- have physical access to the machine to hotplug the keyboard or some other device.
- be logged in at the time, but vt-switch away without the screen lock being activated.
- In order to capture passwords etc, the other-use needs to have a short enough password or the other user doesn't do anything else, otherwise the events will overrun the buffer and you only get a fraction of them
Comment 2 Alexander Bergmann 2013-04-18 09:18:26 UTC
Bug was already opened. See bug#814653.

*** This bug has been marked as a duplicate of bug 814653 ***