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CVE-2011-4613

Status Candidate

Overview

The X.Org X wrapper (xserver-wrapper.c) in Debian GNU/Linux and Ubuntu Linux does not properly verify the TTY of a user who is starting X, which allows local users to bypass intended access restrictions by associating stdin with a file that is misinterpreted as the console TTY.

Related Files

Ubuntu Security Notice USN-1349-1
Posted Jan 26, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1349-1 - It was discovered that the X wrapper incorrectly checked certain console permissions when launched by unprivileged users. An attacker connected remotely could use this flaw to start X, bypassing the console permissions check.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2011-4613
SHA-256 | 1c42f23752a398bf3b5d5ac117d5bd2075e69736a4ce1f6e67c0f2e952f6da84
Debian Security Advisory 2364-1
Posted Dec 18, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2364-1 - The Debian X wrapper enforces that the X server can only be started from a console. "vladz" discovered that this wrapper could be bypassed.

tags | advisory
systems | linux, debian
advisories | CVE-2011-4613
SHA-256 | 82594992626681bfa754de5238bc3f543f5d7e88a43d6589f9a0ef5888292669
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