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Ubuntu Security Notice USN-1224-1
October 03, 2011

rsyslog vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04

Summary:

Rsyslog could be made to crash if it processed a specially crafted message.

Software Description:
- rsyslog: enhanced multi-threaded syslogd

Details:

It was discovered that rsyslog had an off-by-two error when parsing legacy
syslog messages. An attacker could potentially exploit this to cause a
denial of service via application crash.

Update instructions:

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

Ubuntu 11.04:
  rsyslog                         4.6.4-2ubuntu4.1

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

References:
  http://www.ubuntu.com/usn/usn-1224-1
  CVE-2011-3200

Package Information:
  https://launchpad.net/ubuntu/+source/rsyslog/4.6.4-2ubuntu4.1