Tag: security

Who Decommissioned My Enterprise Manager Agent?

I prefer to write blog posts about the interesting questions on OTN. This blog post is one of them. There are usually more than one EM admins managing the systems, and you may want to track other users’ activity. Enterprise Manager Cloud Control provides auditing mechanism called “comprehensive auditing”. It’s not enabled by default for all actions because it may consume a lot of disk space.

If you want to enable it for all actions, you should use “emcli” tool:

After you enable comprehensive auditing for all actions, you can go to “setup” >> “security” >> “audit data” to see all audited actions.

The audit data page, provides filtering on audit records so I can easily list who deleted a target from the system.

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EM13c: Unauthorized Access to Performance Pages

I noticed an interesting security problem (exploit?) on Oracle Enterprise Manager Cloud Control 13cR2 (I tested on EM13cR1 and it also exists on there). When you create an Enterprise Manager administrator, you need to grant some special privileges to that administrator if you want them to access the performance pages, but it seems there’s an alternative way to access the performance pages without requiring extra privileges.

Let’s say I created a new administrator with default roles (EM_USER and PUBLIC), and granted “Connect Target Read-only” for a target “RAC database”. I also granted access to a named credential or shared database login credentials.

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