Operating System:

[Ubuntu]

Published:

13 September 2019

Protect yourself against future threats.

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

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

                               ESB-2019.3499
                      USN-4132-1: Expat vulnerability
                             13 September 2019

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

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

Product:           Expat
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-15903  

Reference:         ESB-2019.3399

Original Bulletin: 
   https://usn.ubuntu.com/4132-1/
   https://usn.ubuntu.com/4132-2/

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

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

USN-4132-1: Expat vulnerability
12 September 2019

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

  o Ubuntu 19.04
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

Expat could be made to expose sensitive information if it received a specially
crafted XML file.

Software Description

  o expat - XML parsing C library

Details

It was discovered that Expat incorrectly handled certain XML files. An attacker
could possibly use this issue to expose sensitive information.

Update instructions

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

Ubuntu 19.04
    libexpat1 - 2.2.6-1ubuntu0.19.5
Ubuntu 18.04 LTS
    libexpat1 - 2.2.5-3ubuntu0.2
Ubuntu 16.04 LTS
    lib64expat1 - 2.1.0-7ubuntu0.16.04.5
    libexpat1 - 2.1.0-7ubuntu0.16.04.5

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

In general, a standard system update will make all the necessary changes.

References

  o CVE-2019-15903

- ---

USN-4132-2: Expat vulnerability
12 September 2019

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

  o Ubuntu 14.04 ESM
  o Ubuntu 12.04 ESM

Summary

Expat could be made to expose sensitive information if it received a specially
crafted XML file.

Software Description

  o expat - XML parsing C library

Details

USN-4132-1 fixed a vulnerability in Expat. This update provides the
corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that Expat incorrectly handled certain XML files. An attacker
could possibly use this issue to expose sensitive information.

Update instructions

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

Ubuntu 14.04 ESM
    lib64expat1 - 2.1.0-4ubuntu1.4+esm2
    libexpat1 - 2.1.0-4ubuntu1.4+esm2
Ubuntu 12.04 ESM
    lib64expat1 - 2.0.1-7.2ubuntu1.7
    libexpat1 - 2.0.1-7.2ubuntu1.7

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

In general, a standard system update will make all the necessary changes.

References

  o USN-4132-1
  o CVE-2019-15903

- --------------------------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:

        https://www.auscert.org.au/bulletins/

===========================================================================
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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=w7Bu
-----END PGP SIGNATURE-----