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AUSCERT External Security Bulletin Redistribution
ESB-2017.1781
Expat vulnerability
20 July 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: lib64expat1
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-9233
Reference: ESB-2017.1598
Original Bulletin:
http://www.ubuntu.com/usn/usn-3356-1
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Ubuntu Security Notice USN-3356-1
July 19, 2017
expat vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.04
- - Ubuntu 16.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
Expat could be made to hang if it received specially crafted input.
Software Description:
- - expat: XML parsing C library
Details:
It was discovered that Expat incorrectly handled certain external entities.
A remote attacker could possibly use this issue to cause Expat to hang,
resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
lib64expat1 2.2.0-2ubuntu0.1
libexpat1 2.2.0-2ubuntu0.1
Ubuntu 16.10:
lib64expat1 2.2.0-1ubuntu0.1
libexpat1 2.2.0-1ubuntu0.1
Ubuntu 16.04 LTS:
lib64expat1 2.1.0-7ubuntu0.16.04.3
libexpat1 2.1.0-7ubuntu0.16.04.3
Ubuntu 14.04 LTS:
lib64expat1 2.1.0-4ubuntu1.4
libexpat1 2.1.0-4ubuntu1.4
In general, a standard system update will make all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-3356-1
CVE-2017-9233
Package Information:
https://launchpad.net/ubuntu/+source/expat/2.2.0-2ubuntu0.1
https://launchpad.net/ubuntu/+source/expat/2.2.0-1ubuntu0.1
https://launchpad.net/ubuntu/+source/expat/2.1.0-7ubuntu0.16.04.3
https://launchpad.net/ubuntu/+source/expat/2.1.0-4ubuntu1.4
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===========================================================================
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