X.Org X server before 1.13.4 and 1.4.x before 1.14.1 does not properly restrict access to input events when adding a new hot-plug device, which might allow physically proximate attackers to obtain sensitive information, as demonstrated by reading passwords from a tty.
CVSS Severity (version 2.0):
Impact Subscore: 2.9
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information
"A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 12.04 LTS
Ubuntu 10.04 LTS"
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[oss-security] 20130418 Xorg-x11-server: Information disclosure due enabling events from hot-plug devices despite input from the device being momentarily disabled