Can't update OpenSSL on Centos 6.4

Question

I've got a Centos 6.4 system that I'm trying to patch OpenSSL for. Currently, yum reports "1.0.1e-16.el6_5.4" and openssl version shows "1.0.1e-fips". On my Ubuntu machines, I was able to update openssl very easily with apt, but if I try "yum update openssl" (or even just "yum update") I get the response "No Packages marked for Update". This seems very unlikely to me.

How can I update this machine?

Update:

$ sudo python -c 'import yum, pprint; yb=yum.YumBase(); pprint.pprint(yb.conf.yumvar, width=1)'
Loading "rhnplugin" plugin
Loading "product-id" plugin
Loading "refresh-packagekit" plugin
Not loading "subscription-manager" plugin, as it is disabled
Config time: 0.042
Running "init" handler for "rhnplugin" plugin
There was an error communicating with RHN.
RHN Satellite or RHN Classic support will be disabled.
Error communicating with server. The message was:
Name or service not known
{'arch': 'ia32e',
 'basearch': 'x86_64',
 'releasever': '6Workstation',
 'uuid': '<< something valid looking >>'}

After I add a repo here, it made a huge series of updates. Unfortunately, even after restart:

$ openssl version
OpenSSL 1.0.1e-fips 11 Feb 2013

And yum update openssl still says "No Packages marked for Update", with yum list openssl returning

Installed Packages
openssl.x86_64                    1.0.1e-42.el6_7.4                     @updates
Available Packages
openssl.i686                      1.0.1e-42.el6_7.4                     updates 

Answer 1

You do not appear to have any CentOS repo's setup, or at least none that work. You can confirm this by running yum repolist. If no entries appear under 'repo id' and/or 'repo name' then definitely no repos setup.

One simple way to correct the problem is to use yum-config-manager --add-repo=<CentOS repo>. That automatically creates a config file under /etc/yum.repos.d/

To get an official CentOS repo, I believe this page would be helpful: https://wiki.centos.org/Download

EDIT:
This may be a more helpful URL: https://www.centos.org/docs/5/html/yum/sn-yum-maintenance.html

That explains how to install the "fastest mirror" RPM which would choose a mirror for you, assuming you have connectivity to the internet.

Answer 2

yum update openssl issue, I was getting this following error while trying to update openssl.

Loaded plugins: product-id, refresh-packagekit, rhnplugin, security, subscription-manager
There was an error communicating with RHN.
RHN Satellite or RHN Classic support will be disabled.
Error communicating with server. The message was:

Error Class Code: 6001
Error Class Info:
RHN is in the process of being decommissioned and systems are no longer able to receive updates or make use of any RHN services.
Please see https://access.redhat.com/articles/2979901 for more info.

Setting up Update Process
Could not retrieve mirrorlist https://mirrors.iuscommunity.org/mirrorlist?repo=ius-el6&arch=x86_64&protocol=http error was
14: Peer cert cannot be verified or peer cert invalid
Error: Cannot retrieve repository metadata (repomd.xml) for repository: ius. Please verify its path and try again.

After few RND I got the solution for error code 6001. Here is the summery, which resolved that issue:

mv /etc/yum.repos.d/* /tmp/
rm -rf /var/cache/yum/*
yum clean all
yum repolist
yum update openssl
yum list installed openssl