USN-3843-2: pixman vulnerability

pixman vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

Ubuntu 12.04 ESM

Summary

pixman could be made to crash or run programs if it processed specially
crafted instructions.

Software Description

pixman – pixel-manipulation library for X and cairo

Details

USN-3843-1 fixed a vulnerability in pixman. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that pixman incorrectly handled the general_composite_rect
function. A remote attacker could use this issue to cause pixman to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 12.04 ESM: libpixman-1-0 – 0.30.2-1ubuntu0.0.0.0.4

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart your session to make
all the necessary changes.

References

Source: USN-3843-2: pixman vulnerability

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