USN-3431-1: NSS vulnerability

Ubuntu Security Notice USN-3431-1

2nd October, 2017

nss vulnerability

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

• Ubuntu 17.04
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

NSS could be made to crash or run programs if it received specially crafted network traffic.

Software description

• nss - Network Security Service library

Details

Martin Thomson discovered that NSS incorrectly generated handshake hashes.
A remote attacker could use this issue to cause NSS 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 17.04:

libnss3 2:3.28.4-0ubuntu0.17.04.3

Ubuntu 16.04 LTS:

libnss3 2:3.28.4-0ubuntu0.16.04.3

Ubuntu 14.04 LTS:

libnss3 2:3.28.4-0ubuntu0.14.04.3

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

After a standard system update you need to restart any applications
that use NSS, such as Evolution and Chromium, to make all the necessary
changes.

References

CVE-2017-7805

from Ubuntu Security Notices http://ift.tt/2g58m8C