Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

CentOS using yum to update Exim. Exim is configured to not allow remote connections using the local_interfaces config option.

My old version was 4.63-5.el5_5.2 and after using:

yum update exim

it shows: 4.63-5.el5_6.2. I would like to know if this updated version includes the recent remote exploit (CVE-2011-1764 discovered May 6th 2011) fix?

share|improve this question
up vote 1 down vote accepted

DKIM was added in 4.70. Unless RedHat backported it your version 4.63 won't be affected. Also, the official statement in the redhat ticket SmallClanger referenced is:


Not vulnerable. This issue did not affect the versions of exim as shipped with Red Hat Enterprise Linux 4 or 5 as they did not include support for DKIM.

share|improve this answer

That particular version was released on March 30th, so it's unlikely to contain a fix for that vulnerability (changelog)

That said, you don't appear to be exposed to it, since you're not processing messages from anywhere but your own server. (Unless you're hosting services for 3rd parties and you don't trust them, that is.)

If it's feasible, I'd recommend applying the workaround documented in this redhat ticket. You should be safe enough until the maintainer releases a new package.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.