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

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

                               ESB-2020.0473
                      USN-4275-1: Qt vulnerabilities
                             11 February 2020

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

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

Product:           Qtbase
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Denial of Service               -- Remote/Unauthenticated      
                   Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-0570 CVE-2020-0569 CVE-2019-18281
                   CVE-2018-19872  

Reference:         ESB-2020.0439
                   ESB-2020.0420
                   ESB-2020.0406
                   ESB-2020.0398
                   ESB-2020.0385
                   ESB-2019.4054
                   ESB-2019.1247

Original Bulletin: 
   https://usn.ubuntu.com/4275-1/

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

USN-4275-1: Qt vulnerabilities
10 February 2020

qtbase-opensource-src vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 19.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS

Summary

Several security issues were fixed in Qt.

Software Description

  o qtbase-opensource-src - Qt 5 libraries

Details

It was discovered that Qt incorrectly handled certain PPM images. If a user or
automated system were tricked into opening a specially crafted PPM file, a
remote attacker could cause Qt to crash, resulting in a denial of service. This
issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-19872)

It was discovered that Qt incorrectly handled certain text files. If a user or
automated system were tricked into opening a specially crafted text file, a
remote attacker could cause Qt to crash, resulting in a denial of service. This
issue only affected Ubuntu 19.10. (CVE-2019-18281)

It was discovered that Qt incorrectly searched for plugins in the current
working directory. An attacker could possibly use this issue to execute
arbitrary code. (CVE-2020-0569)

It was discovered that Qt incorrectly searched for libraries relative to the
current working directory. An attacker could possibly use this issue to execute
arbitrary code. This issue only affected Ubuntu 19.10. (CVE-2020-0570)

Update instructions

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

Ubuntu 19.10
    libqt5core5a - 5.12.4+dfsg-4ubuntu1.1
    libqt5gui5 - 5.12.4+dfsg-4ubuntu1.1
Ubuntu 18.04 LTS
    libqt5core5a - 5.9.5+dfsg-0ubuntu2.5
    libqt5gui5 - 5.9.5+dfsg-0ubuntu2.5
Ubuntu 16.04 LTS
    libqt5core5a - 5.5.1+dfsg-16ubuntu7.7
    libqt5gui5 - 5.5.1+dfsg-16ubuntu7.7

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

After a standard system update you need to restart your session to make all the
necessary changes.

References

  o CVE-2018-19872
  o CVE-2019-18281
  o CVE-2020-0569
  o CVE-2020-0570

- --------------------------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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=h0AD
-----END PGP SIGNATURE-----