1. Ubuntu Security Notices
  2. USN-3336-1

USN-3336-1: NSS vulnerability

Publication date

21 June 2017

Overview

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

Releases

Packages

  • nss - Network Security Service library

Details

It was discovered that NSS incorrectly handled certain empty SSLv2
messages. A remote attacker could possibly use this issue to cause NSS to
crash, resulting in a denial of service.

It was discovered that NSS incorrectly handled certain empty SSLv2
messages. A remote attacker could possibly use this issue to cause NSS to
crash, resulting in a denial of service.

Update instructions

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.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
17.04 zesty libnss3 –  2:3.28.4-0ubuntu0.17.04.2
16.10 yakkety libnss3 –  2:3.28.4-0ubuntu0.16.10.2
16.04 xenial libnss3 –  2:3.28.4-0ubuntu0.16.04.2
14.04 trusty libnss3 –  2:3.28.4-0ubuntu0.14.04.2

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References

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