Ubuntu Security Notice USN-2477-1
19th January, 2015
libevent vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
libevent could be made to crash or run programs if it processed specially
crafted data.
Software description
- libevent
– Asynchronous event notification library
Details
Andrew Bartlett discovered that libevent incorrectly handled large inputs
to the evbuffer API. 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 version:
- Ubuntu 14.10:
-
libevent-2.0-5
2.0.21-stable-1ubuntu1.14.10.1
- Ubuntu 14.04 LTS:
-
libevent-2.0-5
2.0.21-stable-1ubuntu1.14.04.1
- Ubuntu 12.04 LTS:
-
libevent-2.0-5
2.0.16-stable-1ubuntu0.1
- Ubuntu 10.04 LTS:
-
libevent-1.4-2
1.4.13-stable-1ubuntu0.1
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.