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SAP Web Application Server Flaws Permits Denial of Service, Cross-Site Scripting, and Shortcut Creation Attacks
SecurityTracker Alert ID: 1026055|
SecurityTracker URL: http://securitytracker.com/id/1026055
(Links to External Site)
Date: Sep 15 2011
Denial of service via network, Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): 7.00 Patch Number 95|
Several vulnerabilities were reported in SAP Web Application Server. A remote user can cause denial of service conditions. A remote user can conduct cross-site scripting attacks. A remote user can cause shortcuts to be created on the target user's system.|
A remote user can exploit a flaw in the 'cachetest' service of the SAP Internet Communication Framework (ICM) to cause the service to consume excessive CPU resources on the target system.
The WEBRFC ICF service does not properly filter HTML code from user-supplied input before displaying the input. A remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the SAP Web Application Server software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
A remote user can inject a parameter via the SHORTCUT ICF service to cause shortcuts to be created on the target user's system.
The original advisories are available at:
Mariano Nunez Di Croce of Onapsis reported these vulnerabilities.
A remote user can cause excessive CPU consumption on the target system.|
A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the SAP Web Application Server software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
A remote user can cause shortcuts to be created on the target user's system.
The vendor has issued a fix (SAP Note 1553930, 1536640, and 1556749).|
Vendor URL: www.sap.com/ (Links to External Site)
Access control error, Input validation error, Resource error|
Linux (Any), UNIX (Any), Windows (Any)|
Source Message Contents
Date: Thu, 15 Sep 2011 08:57:59 -0300|
Subject: [Onapsis Security Advisory 2011-014] SAP WebAS Remote Denial of Service
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?Onapsis Security Advisory 2011-014: SAP WebAS Remote Denial of Service
1. Impact on Business
By exploiting this vulnerability, an unauthenticated attacker would be able to remotely disrupt the SAP Application Server.
This would result in the total unavailability of the ERP functionality, preventing company users from performing the required business processes.
Risk Level: High
2. Advisory Information
- - Release Date: 2011-09-14
- - Last Revised: 2011-09-14
- - Security Advisory ID: ONAPSIS-2011-014
- - Onapsis SVS ID: ONAPSIS-00039
- - Researcher: Mariano Nuņez Di Croce
3. Vulnerability Information
- - Vendor: SAP
- - Affected Components:
* SAP Web Application Server 7.00 Patch Number 95
( Check note 1553930 for detailed information on affected releases)
- - Vulnerability Class: Abuse of designed functionality
- - Remotely Exploitable: Yes
- - Locally Exploitable: No
- - Authentication Required: Yes
- - Original Advisory: http://www.onapsis.com/resources/get.php?resid=adv_onapsis-2011-014
4. Affected Components Description
The SAP Web Application Server provides access to many services through a Web engine, called the SAP Internet Communication Framework (ICM).
5. Vulnerability Details
It was detected that the ?cachetest? service suffers from an input validation vulnerability.
This interface can be abused by a malicious attacker to put the system under continuous, high-load conditions leading to a denial of service condition.
Further 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 1553930 which provide patched versions of the affected components.
The patches can be downloaded from https://service.sap.com/sap/support/notes/1553930
Onapsis strongly recommends SAP customers to download the related security fixes and apply them to the affected components in order to reduce business
7. Report Timeline
* 2011-01-24: Onapsis provides vulnerability information to SAP.
* 2011-01-25: SAP confirms reception of vulnerability submission.
* 2011-06-14: SAP releases SAP Note 1553930 fixing the vulnerability.
* 2011-09-14: Onapsis releases security advisory.
About Onapsis Research Labs
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
The outcome of this advanced and cutting-edge research is continuously provided to the Onapsis Consulting and Development teams, improving the quality
of our solutions and enabling our customers to be protected from the latest risks to their critical business information.
Furthermore, the results of this research projects are usually shared with the general security and professional community, encouraging the sharing of
information and increasing the common knowledge in this field.
Onapsis is the leading provider of solutions for the security of ERP systems and business-critical applications. Through different innovative products
and services, Onapsis helps its global customers to effectively increase the security level of their core business platforms, protecting their
information and decreasing financial fraud risks.
Onapsis is built upon a team of world-renowned experts in the SAP security field, with several years of experience in the assessment and protection of
critical platforms in world-wide customers, such as Fortune-100 companies and governmental entities.
Our star product, Onapsis X1, enables our customers to perform automated Security & Compliance Audits, Vulnerability Assessments and Penetration Tests
over their SAP platform, helping them enforce compliance requirements, decrease financial fraud risks an reduce audit costs drastically.
Some of our featured services include SAP Penetration Testing, SAP Gateway & RFC security, SAP Enterprise Portal security assessment, Security Support
for SAP Implementations and Upgrades, SAP System Hardening and SAP Technical Security Audits.
For further information about our solutions, please contact us at email@example.com and visit our website at www.onapsis.com.
Copyright (c) 2011 Onapsis SRL. All rights reserved.
This advisory may be distributed as long as its distribution is free-of-charge and proper credit is given.
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