USN-3186-1: iucode-tool vulnerability

Ubuntu Security Notice USN-3186-1

1st February, 2017

iucode-tool vulnerability

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

• Ubuntu 16.10
• Ubuntu 16.04 LTS

Summary

iucode-tool could be made to crash or run programs if it opened a specially crafted file.

Software description

• iucode-tool - Intel processor microcode tool

Details

It was discovered that iucode-tool incorrectly handled certain microcodes
when using the -tr loader. If a user were tricked into processing a
specially crafted microcode, a remote attacker could use this issue to
cause iucode-tool 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 version:

Ubuntu 16.10:

iucode-tool 1.6.1-1ubuntu0.1

Ubuntu 16.04 LTS:

iucode-tool 1.5.1-1ubuntu0.1

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

In general, a standard system update will make all the necessary changes.

References

CVE-2017-0357