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AUSCERT External Security Bulletin Redistribution
ESB-2017.0641
libevent vulnerabilities
14 March 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: libevent-2.0-5
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-10197 CVE-2016-10196 CVE-2016-10195
Original Bulletin:
http://www.ubuntu.com/usn/usn-3228-1
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running libevent-2.0-5 check for an updated version of the software
for their operating system.
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Ubuntu Security Notice USN-3228-1
March 13, 2017
libevent vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 16.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
- - Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in libevent.
Software Description:
- - libevent: Asynchronous event notification library
Details:
Guido Vranken discovered that libevent incorrectly handled memory when
processing certain data. A remote attacker could possibly use this issue
with an application that uses libevent to cause 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 16.10:
libevent-2.0-5 2.0.21-stable-2ubuntu0.16.10.1
Ubuntu 16.04 LTS:
libevent-2.0-5 2.0.21-stable-2ubuntu0.16.04.1
Ubuntu 14.04 LTS:
libevent-2.0-5 2.0.21-stable-1ubuntu1.14.04.2
Ubuntu 12.04 LTS:
libevent-2.0-5 2.0.16-stable-1ubuntu0.2
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-3228-1
CVE-2016-10195, CVE-2016-10196, CVE-2016-10197
Package Information:
https://launchpad.net/ubuntu/+source/libevent/2.0.21-stable-2ubuntu0.16.10.1
https://launchpad.net/ubuntu/+source/libevent/2.0.21-stable-2ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/libevent/2.0.21-stable-1ubuntu1.14.04.2
https://launchpad.net/ubuntu/+source/libevent/2.0.16-stable-1ubuntu0.2
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