IBM WebSphere Application Server CSIv2 security bypass

was-csiv2-security-bypass (52076)

Medium Risk

Description:

IBM WebSphere Application Server could allow a remote attacker to bypass security restrictions, caused by an error when CSIv2 Security is configured with Identity Assertion. An attacker could exploit this vulnerability using vectors related to Enterprise JavaBeans (EJB) to bypass CSIv2 security restrictions.IBM3

*CVSS:

Base Score:	4.3
Access Vector:	Network
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	Partial
Availability Impact:	None
Temporal Score:	3.2
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Bypass Security

Remedy:

For WebSphere Application Server 6.1:
Apply the latest Fix Pack (6.1.0.25 or later) or APAR PK83097. See References.

For WebSphere Application Server 7.0:
Apply the latest Fix Pack (7.0.0.5 or later) or APAR PK83097. See References.

References:

• IBM APAR PK83097: Recommended fixes for WebSphere Application Server.
• BID-36163: IBM WebSphere Application Server 'CSIv2' Security Bypass Vulnerability
• CVE-2009-2085: The Security component in IBM WebSphere Application Server (WAS) 6.1 before 6.1.0.25 and 7.0 before 7.0.0.5 does not properly handle use of Identity Assertion with CSIv2 Security, which allows remote attackers to bypass intended CSIv2 access restrictions via vectors involving Enterprise JavaBeans (EJB).

Platforms Affected:

• IBM WebSphere Application Server 6.1
• IBM WebSphere Application Server 7.0

Reported:

Jul 27, 2009

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For corrections or additions please email xforce@iss.net

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia? integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force? research and development team ? an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.