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Ubuntu Security Notice USN-4476-1
August 27, 2020

nss vulnerability
==========================================================================

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

– Ubuntu 20.04 LTS
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 ESM
– Ubuntu 12.04 ESM

Summary:

NSS could be made to expose sensitive information if it received a specially crafted
input.

Software Description:
– nss: Network Security Service library

Details:

It was discovered that NSS incorrectly handled some inputs.
An attacker could possibly use this issue to expose sensitive information.

Update instructions:

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

Ubuntu 20.04 LTS:
libnss3 2:3.49.1-1ubuntu1.5

Ubuntu 18.04 LTS:
libnss3 2:3.35-2ubuntu2.12

Ubuntu 16.04 LTS:
libnss3 2:3.28.4-0ubuntu0.16.04.14

Ubuntu 14.04 ESM:
libnss3 2:3.28.4-0ubuntu0.14.04.5+esm8

Ubuntu 12.04 ESM:
libnss3 2:3.28.4-0ubuntu0.12.04.11

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/4476-1
CVE-2020-12403

Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.49.1-1ubuntu1.5
https://launchpad.net/ubuntu/+source/nss/2:3.35-2ubuntu2.12
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.14
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