Ubuntu Security Notice 3843-2 - USN-3843-1 fixed a vulnerability in pixman. This update provides the corresponding update for Ubuntu 12.04 ESM. 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. Various other issues were also addressed.
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Ubuntu Security Notice USN-3843-2
December 11, 2018
pixman vulnerability
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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
After a standard system update you need to restart your session to make
all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3843-2
https://usn.ubuntu.com/usn/usn-3843-1
CVE-2015-5297