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Onapsis Security Advisory 2014-020: SAP Business Objects Information Disclosure
A malicious user can discover information relating to valid users using a vulnerable Business Objects Enterprise instance. This information could be used to allow the malicious user to specialize their attacks against the system.
Risk Level: Medium
(Check SAP Note 2001109 for detailed information on affected releases)
Business Objects is part of the Business Intelligence platform from SAP. It has components that provide performance management, planning, reporting, query and analysis and enterprise information management.
Every Business Objects installation provides a web service to interact with different platform services.
The vulnerability could be exploited by sending a web services request to the Session web service and attempting SecEnterprise authentication. By timing the replies from the remote server an attacker can identify existent and non-existent users. Specifically, an authentication attempt from the remote server using an existing username will cause the server to take longer to respond than a username that does not exist.
SAP has released SAP Note 2001109 which provide patched versions of the affected components.
The patches can be downloaded from https://service.sap.com/sap/support/notes/2001109.
Onapsis strongly recommends SAP customers to download the related security fixes and apply them to the affected components in order to reduce business risks.
2013-08-29: Onapsis provides vulnerability information to SAP AG. 2013-08-30: SAP confirms having the information of vulnerability. 2014-06-10: SAP releases security patches. 2014-10-08: Onapsis notifies availability of security advisory.
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