ESB-2017.2481 - [Ubuntu] libnss3: Execute arbitrary code/commands - Remote with user interaction 2017-10-03

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2481
                             NSS vulnerability
                              3 October 2017

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

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

Product:           libnss3
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-2017-7805  

Reference:         ASB-2017.0155
                   ESB-2017.2466
                   ESB-2017.2459

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3431-1

- --------------------------BEGIN INCLUDED TEXT--------------------

==========================================================================
Ubuntu Security Notice USN-3431-1
October 02, 2017

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

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

- - Ubuntu 17.04
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS

Summary:

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

Software Description:
- - nss: Network Security Service library

Details:

Martin Thomson discovered that NSS incorrectly generated handshake hashes.
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 17.04:
  libnss3                         2:3.28.4-0ubuntu0.17.04.3

Ubuntu 16.04 LTS:
  libnss3                         2:3.28.4-0ubuntu0.16.04.3

Ubuntu 14.04 LTS:
  libnss3                         2:3.28.4-0ubuntu0.14.04.3

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

References:
  https://www.ubuntu.com/usn/usn-3431-1
  CVE-2017-7805

Package Information:
  https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.17.04.3
  https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.3
  https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.14.04.3

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=VYIY
-----END PGP SIGNATURE-----

« Back to bulletins