Ubuntu 14.10 USN-2477-1 Critical: libevent Denial of Service Risk

ubuntu

January 19, 2015

libevent could be made to crash or run programs if it processed specially crafted data.

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.

Topics Covered

security advisory denial of service critical Ubuntu libevent

Update Instructions

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

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

In general, a standard system update will make all the necessary changes.