Advisory Published

USN-4397-2: NSS vulnerability

First published: Wed Jun 17 2020(Updated: )

USN-4397-1 fixed a vulnerability in NSS. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: Cesar Pereida Garcia discovered that NSS incorrectly handled DSA key generation. A local attacker could possibly use this issue to perform a timing attack and recover DSA keys. (CVE-2020-12399)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/libnss3<2:3.28.4-0ubuntu0.14.04.5+esm5
2:3.28.4-0ubuntu0.14.04.5+esm5
=14.04
All of
ubuntu/libnss3<2:3.28.4-0ubuntu0.12.04.8
2:3.28.4-0ubuntu0.12.04.8
=12.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is USN-4397-2.

  • What is the severity of USN-4397-2?

    The severity of USN-4397-2 is not mentioned in the provided information.

  • What software is affected by USN-4397-2?

    Ubuntu 12.04 ESM and Ubuntu 14.04 ESM with libnss3 version 2:3.28.4-0ubuntu0.14.04.5+esm5 and libnss3 version 2:3.28.4-0ubuntu0.12.04.8 are affected.

  • How can I fix USN-4397-2?

    To fix USN-4397-2, update the libnss3 package to version 2:3.28.4-0ubuntu0.14.04.5+esm5 for Ubuntu 14.04 ESM and version 2:3.28.4-0ubuntu0.12.04.8 for Ubuntu 12.04 ESM.

  • Where can I find more information about USN-4397-2?

    You can find more information about USN-4397-2 on the Ubuntu Security Notices website.

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