========================================================================== Ubuntu Security Notice USN-1723-1 February 14, 2013
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Qt.
Software Description: - qt4-x11: Qt 4 libraries
Richard J. Moore and Peter Hartmann discovered that Qt allowed redirecting requests from http to file schemes. If an attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to view sensitive information. This issue only affected Ubuntu 11.10, Ubuntu 12.04 LTS, and Ubuntu 12.10. (CVE-2012-5624)
Stephen Cheng discovered that Qt may report incorrect errors when ssl certificate verification fails. (CVE-2012-6093)
Tim Brown and Mark Lowe discovered that Qt incorrectly used weak permissions on shared memory segments. A local attacker could use this issue to view sensitive information, or modify program data belonging to other users. (CVE-2013-0254)
The problem can be corrected by updating your system to the following package versions:
Ubuntu 12.10: libqt4-core 4:4.8.3+dfsg-0ubuntu3.1 libqt4-network 4:4.8.3+dfsg-0ubuntu3.1
Ubuntu 12.04 LTS: libqt4-core 4:4.8.1-0ubuntu4.4 libqt4-network 4:4.8.1-0ubuntu4.4
Ubuntu 11.10: libqt4-core 4:4.7.4-0ubuntu8.3 libqt4-network 4:4.7.4-0ubuntu8.3
Ubuntu 10.04 LTS: libqt4-core 4:4.6.2-0ubuntu5.6 libqt4-network 4:4.6.2-0ubuntu5.6
After a standard system update you need to restart your session to make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-1723-1 CVE-2012-5624, CVE-2012-6093, CVE-2013-0254
Package Information: https://launchpad.net/ubuntu/+source/qt4-x11/4:4.8.3+dfsg-0ubuntu3.1 https://launchpad.net/ubuntu/+source/qt4-x11/4:4.8.1-0ubuntu4.4 https://launchpad.net/ubuntu/+source/qt4-x11/4:4.7.4-0ubuntu8.3 https://launchpad.net/ubuntu/+source/qt4-x11/4:4.6.2-0ubuntu5.6
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