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==========================================================================
Ubuntu Security Notice USN-4455-1
August 10, 2020

nss vulnerabilities
==========================================================================

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:

Several security issues were fixed in NSS.

Software Description:
- nss: Network Security Service library

Details:

It was discovered that NSS incorrectly handled certain signatures.
An attacker could possibly use this issue to expose sensitive information.
(CVE-2020-12400, CVE-2020-12401, CVE-2020-6829)

Update instructions:

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

Ubuntu 20.04 LTS:
  libnss3                         2:3.49.1-1ubuntu1.4

Ubuntu 18.04 LTS:
  libnss3                         2:3.35-2ubuntu2.11

Ubuntu 16.04 LTS:
  libnss3                         2:3.28.4-0ubuntu0.16.04.13

Ubuntu 14.04 ESM:
  libnss3                         2:3.28.4-0ubuntu0.14.04.5+esm7

Ubuntu 12.04 ESM:
  libnss3                         2:3.28.4-0ubuntu0.12.04.10

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

References:
  https://usn.ubuntu.com/4455-1
  CVE-2020-12400, CVE-2020-12401, CVE-2020-6829

Package Information:
  https://launchpad.net/ubuntu/+source/nss/2:3.49.1-1ubuntu1.4
  https://launchpad.net/ubuntu/+source/nss/2:3.35-2ubuntu2.11
  https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.13

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