Onapsis Security Advisory 2013-005: SAP CCMS Agent Code Injection
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By exploiting this vulnerability, a remote unauthenticated attacker might be able to access or modify all the business information processed by the ERP system.
This would result in the total compromise of the SAP infrastructure.
Risk Level: High
-- Public Release Date: 2013-02-21
-- Subscriber Notification Date: 2013-02-21
-- Last Revised: 2013-02-21
-- Security Advisory ID: ONAPSIS-2013-005
-- Onapsis SVS ID: N/A
-- Researcher: Juan Perez-Etchegoyen
-- Initial Base CVSS v2: 7.5 (AV:N/AC:L/AU:N/C:P/I:P/A:P)
-- Vendor: SAP
-- Affected Components:
-- Vulnerability Class: Command Injection
-- Remotely Exploitable: Yes
-- Locally Exploitable: No
-- Authentication Required: No
-- Original Advisory: http://www.onapsis.com/resources/get.php?resid=adv_onapsis-2013-005
The monitoring architecture provides an infrastructure for monitoring your IT environment and its components. Monitoring data is stored in the shared memory of every server with a running SAP instance or a running agent. Read and write access from the central monitoring system is possible in two different ways: Using a defined ABAP interface, in the case of an SAP instance Using the CCMS agent, in the case of any server on which the agent is installed and active CCMS agents are independent processes with an interface through RFC to a central monitoring system and an interface to the shared memory. ”.
The CCMS agent is built as an RFC external server, exposing several RFC functions. One of this functions allows a remote unauthenticated user to execute arbitrary commands which are executed with SIDADM privileges (the highest possible in the SAP world).
Abusing of this RFC function, a remote unauthenticated attacker would be able to compromise the SAP systems that are monitored by a CEN system (Central Monitoring System).
Technical details about this issue are not disclosed at this moment with the purpose of providing enough time to affected customers to patch their systems and protect against the exploitation of the described vulnerability.
SAP has released SAP Note 1758450 which provide patched versions of the affected components. The patches can be downloaded from https://service.sap.com/sap/support/notes/1758450.
Onapsis strongly recommends SAP customers to download the related security fixes and apply them to the affected components in order to reduce business risks.
2012-04-17: SAP confirms having the information of vulnerability. 2012-11-13: SAP releases security patches. 2013-02-21: Onapsis notifies availability of security advisory to security mailing lists.
Onapsis is continuously investing resources in the research of the security of business critical systems and applications.
With that objective in mind, a special unit ? the Onapsis Research Labs ? has been developed since the creation of the company. The experts involved in this special team lead the public research trends in this matter, having discovered and published many of the public security vulnerabilities in these platforms.
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