Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2019.1490
Ubuntu bulletin: USN-3961-1: Dovecot vulnerabilities
1 May 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: dovecot
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11499 CVE-2019-11494
Original Bulletin:
https://usn.ubuntu.com/3961-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running dovecot check for an updated version of the software for
their operating system.
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-3961-1: Dovecot vulnerabilities
30 April 2019
dovecot vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.10
Summary
Dovecot could be made to crash if it received specially crafted network
traffic.
Software Description
o dovecot - IMAP and POP3 email server
Details
It was discovered that the Dovecot Submission login service incorrectly handled
certain operations. A remote attacker could possibly use this issue to cause
Dovecot to crash, resulting in a denial of service.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.04
dovecot-core - 1:2.3.4.1-1ubuntu2.2
dovecot-submissiond - 1:2.3.4.1-1ubuntu2.2
Ubuntu 18.10
dovecot-core - 1:2.3.2.1-1ubuntu3.4
dovecot-submissiond - 1:2.3.2.1-1ubuntu3.4
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-2019-11494
o CVE-2019-11499
- --------------------------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
iQIVAwUBXMksQmaOgq3Tt24GAQhTXg/+Ipjd73AS+eOfZ9ntuerBX++KwlHJwz+h
Nssknpc9PYKDezyNw5geMdwqtFCG6Ie4Vag6t/CVE3NVwmaZ/xWvXfKmSgVDjyvS
o0YGHBsJ77CQ+cuApRfa0purhW3VC/CiX3n1jgnh3T5Ur/e2NVKckALgS0SRVOPH
k+f9J2e5WfDgvGSO+2OStp/XKaHbBab41Xotl2olJpgL18BkQA9X+ZI60XSI5JmW
WlQUiE2pRf7bYJKlalW6hGNE9fUWLLcuU8/+tvSxoAYZr9IAdh5EEBQE0E6KQbWV
SC2K/m1xZGMew+foZslTRaxQWGSwCIKyaREPABvJPeoLk2iNB0LelMgrosOKy1Ew
Ak8tD+635tl6vbCVO33fXEvbGpFvFIaJZHVht29NCh31D5PI5hg1vVBKy0MRbBQK
4ZpSmyVcjEHdT8b8QXIhYk2rHnpjJzqisRPxu7CB8OXbvo31r1/xtXK385wmUmbE
lIJFS27qkUzpBk7QClGb2GqagOh746LqZkV+iLNH83g3z0285/+q7jnsD5+edtv7
SgR471N2Yj7wp4uJHg0HfF95lmruh30LPM317iwLxGmCQpcAhJoy7IAwskC00+GJ
ptUDnjd7AHAabMqFCNs/zQ1HIR/rEzPPrvWOJhb/8+2f8FtwZLSXMgKrJioVZT3U
7uk6TBGLGhY=
=HdFx
-----END PGP SIGNATURE-----