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. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-1940
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