Operating System:

[Ubuntu]

Published:

28 November 2019

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.4507
                         Ubuntu: NSS vulnerability
                             28 November 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           NSS
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-11745  

Reference:         ESB-2019.4449

Original Bulletin: 
   https://usn.ubuntu.com/4203-1/
   https://usn.ubuntu.com/4203-2/

Comment: This bulletin contains two (2) Ubuntu security advisories.

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USN-4203-1: NSS vulnerability
27 November 2019

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

  o Ubuntu 19.10
  o Ubuntu 19.04
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

NSS could be made to crash or run programs if it received specially crafted
input.

Software Description

  o nss - Network Security Service library

Details

It was discovered that NSS incorrectly handled certain memory operations. A
remote attacker could use this issue to cause NSS to crash, resulting in a
denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 19.10
    libnss3 - 2:3.45-1ubuntu2.1
Ubuntu 19.04
    libnss3 - 2:3.42-1ubuntu2.3
Ubuntu 18.04 LTS
    libnss3 - 2:3.35-2ubuntu2.5
Ubuntu 16.04 LTS
    libnss3 - 2:3.28.4-0ubuntu0.16.04.8

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

After a standard system update you need to restart any applications that use
NSS, such as Evolution, to make all the necessary changes.

References

  o CVE-2019-11745

- - --------------------------------------------------------------------------------

USN-4203-2: NSS vulnerability
27 November 2019

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

  o Ubuntu 14.04 ESM
  o Ubuntu 12.04 ESM

Summary

NSS could be made to crash or run programs if it received specially crafted
input.

Software Description

  o nss - Network Security Service library

Details

USN-4203-1 fixed a vulnerability in NSS. This update provides the corresponding
update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that NSS incorrectly handled certain memory operations. A
remote attacker could use this issue to cause NSS to crash, resulting in a
denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 14.04 ESM
    libnss3 - 2:3.28.4-0ubuntu0.14.04.5+esm2
Ubuntu 12.04 ESM
    libnss3 - 2:3.28.4-0ubuntu0.12.04.5

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

After a standard system update you need to restart any applications that use
NSS, such as Evolution, to make all the necessary changes.

References

  o USN-4203-1
  o CVE-2019-11745

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