[USN-3431-1] NSS vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Mon Oct 2 15:11:12 UTC 2017

Ubuntu Security Notice USN-3431-1
October 02, 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


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

Software Description:
- nss: Network Security Service library


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 versions:

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

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


Package Information:

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