USN-1628-1: Qt vulnerability

8 November 2012

Qt applications could be made to expose sensitive information over the network.

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Details

Juliano Rizzo and Thai Duong discovered a flaw in the Transport Layer
Security (TLS) protocol when it is used with data compression. If an
attacker were able to perform a machine-in-the-middle attack, this flaw
could be exploited to view sensitive information. This update disables
TLS data compression in Qt by default.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04
Ubuntu 11.10
Ubuntu 10.04

After a standard system update you need to restart any KDE sessions or
applications linked against Qt to make all the necessary changes.

References

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