USN-1723-1: Qt vulnerabilities

Releases

• Ubuntu 12.10
• Ubuntu 12.04
• Ubuntu 11.10
• Ubuntu 10.04

Packages

• qt4-x11 - Qt 4 libraries

Details

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
machine-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)

Update instructions

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

• 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

• 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

• CVE-2012-5624
• CVE-2012-6093
• CVE-2013-0254