Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

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

The Heartbleed OpenSSL vulnerability ( affects OpenSSL 1.0.1 through 1.0.1f (inclusive)

I use Amazon Elastic Load Balancer to terminate my SSL connections. Is ELB vulnerable?

share|improve this question
I've been trying to get a straight answer to this one myself. This forum post implies yes, but it's not from an official source so I'm not sure how far I trust it (except that when in doubt I'd lean toward assuming compromised over secure). – voretaq7 Apr 8 '14 at 1:34
Is there any POC code available for exploiting this so we don't have to wait for/trust vendors' responses? – Mark Wagner Apr 8 '14 at 2:49 will check whether heartbeat is enabled, but can't detect the difference between patched and unpatched versions. claims to be a real POC, and it seemed to work for my case, but its server is slammed and the author hasn't posted source. – solublefish Apr 8 '14 at 3:51
1 has now posted a "fork me on github" link on the page - – Ben W Apr 8 '14 at 6:02
up vote 31 down vote accepted

Update 09/04/2014 1:00AM EST

Amazon has stated that all Elastic Load Balancers have been updated and are now longer vulnerable. They recommend rotating certs as well.

Update 08/04/2014 2:56PM CST

Amazon has stated that all Elastic Load Balancers except those in US-EAST-1 have been updated, and the vast majority of those in US-EAST-1 have been updated.

Update 08/04/2014 9:58PM PST

Amazon has confirmed that this affects the ELB platform and is currently working to mitigate the exploit. See the link below for the official response.

Yes, It is. most likely. Several people have stated that they've gotten responses from Amazon that ELB is affected by this issue. Frankly most SSL applications are affected by this with the notable exception of Cloudflare who seems to have gotten early warning.

Evidence suggesting as such:

See also:

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.