USN-3336-1: NSS vulnerability

Releases

• Ubuntu 17.04
• Ubuntu 16.10
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

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.

Update instructions

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

Ubuntu 17.04

• libnss3 - 2:3.28.4-0ubuntu0.17.04.2

Ubuntu 16.10

• libnss3 - 2:3.28.4-0ubuntu0.16.10.2

Ubuntu 16.04

• libnss3 - 2:3.28.4-0ubuntu0.16.04.2

Ubuntu 14.04

• libnss3 - 2:3.28.4-0ubuntu0.14.04.2

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-2017-7502

Related notices

• USN-3372-1: libnss3, nss