ESB-2019.0080.2 - UPDATE [Ubuntu] libnss3: Multiple vulnerabilities 2019-02-19

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2019.0080.2
                            NSS vulnerabilities
                             19 February 2019

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

Product:           libnss3
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Access Privileged Data -- Existing Account      
                   Unauthorised Access    -- Remote/Unauthenticated
                   Reduced Security       -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-12404 CVE-2018-12384 CVE-2018-0495

Reference:         ESB-2019.0010
                   ESB-2018.3380
                   ESB-2018.1870
                   ESB-2018.1795

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3850-1
   http://www.ubuntu.com/usn/usn-3850-2

Comment: This bulletin contains two (2) advisories

Revision History:  February 19 2019: Added corresponding update for Ubuntu 12.04 ESM
                   January  10 2019: Initial Release

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USN-3850-1: NSS vulnerabilities

9 January 2019

nss vulnerabilities

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

  o Ubuntu 18.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS
  o Ubuntu 14.04 LTS

Summary

Several security issues were fixed in NSS.

Software Description

  o nss - Network Security Service library

Details

Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation. A
local attacker could possibly use this issue to perform a cache-timing attack
and recover private ECDSA keys. (CVE-2018-0495)

It was discovered that NSS incorrectly handled certain v2-compatible
ClientHello messages. A remote attacker could possibly use this issue to
perform a replay attack. (CVE-2018-12384)

It was discovered that NSS incorrectly handled certain padding oracles. A
remote attacker could possibly use this issue to perform a variant of the
Bleichenbacher attack. (CVE-2018-12404)

Update instructions

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

Ubuntu 18.10
    libnss3 - 2:3.36.1-1ubuntu1.1
Ubuntu 18.04 LTS
    libnss3 - 2:3.35-2ubuntu2.1
Ubuntu 16.04 LTS
    libnss3 - 2:3.28.4-0ubuntu0.16.04.4
Ubuntu 14.04 LTS
    libnss3 - 2:3.28.4-0ubuntu0.14.04.4

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-2018-0495
  o CVE-2018-12384
  o CVE-2018-12404

(C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of
Canonical Ltd.

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==========================================================================
Ubuntu Security Notice USN-3850-2
February 18, 2019

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

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

- - Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in NSS.

Software Description:
- - nss: Network Security Service library

Details:

USN-3850-1 fixed several vulnerabilities in NSS. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 Keegan Ryan discovered that NSS incorrectly handled ECDSA key
 generation. A local attacker could possibly use this issue to perform
 a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495)

 It was discovered that NSS incorrectly handled certain v2-compatible
 ClientHello messages. A remote attacker could possibly use this issue
 to perform a replay attack. (CVE-2018-12384)

 It was discovered that NSS incorrectly handled certain padding
 oracles. A remote attacker could possibly use this issue to perform a
 variant of the Bleichenbacher attack. (CVE-2018-12404)

Update instructions:

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

Ubuntu 12.04 ESM:
  libnss3                         2:3.28.4-0ubuntu0.12.04.2

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

References:
  https://usn.ubuntu.com/usn/usn-3850-2
  https://usn.ubuntu.com/usn/usn-3850-1
  CVE-2018-0495, CVE-2018-12384, CVE-2018-12404

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