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Possible security exposure with XML digital signature with IBM WebSphere Application Server (PK80596 and PK80627)

Flash (Alert)

Abstract

Possible security exposure with XML digital signature

Content

Versions Affected:
IBM WebSphere Application Server Versions 6.0 through 6.0.2.33 (6.0.2.34 for z/OS), 6.1 through 6.1.0.23 (6.1.0.24 for z/OS), and 7.0 through 7.0.0.1. All platforms are affected.
This security exposure does not occur on Versions 5.1 or later, 6.0.2.35 or later, 6.1.0.25 or later, or 7.0.0.3 or later.

Usage Scenarios Affected:

WS-Security enabled JAX-RPC and JAX-WS web services which employ the shared key digital signature HMAC-SHA1 algorithm are affected by this problem.
Users who use secure conversation and Kerberos message protection are affected by this problem.
Users who use asymmetric key digital signature such as X.509 message protection are not affected by this problem.

Problem Description:
The WebSphere Application Server may accept web services messages that do not follow XML digital signature best practices if those messages otherwise satisfy quality of service policy requirements. The exposure to exploitation by third parties is reduced if messages are encrypted during transmission either at the message level or at the transport level.

Solutions:
Applying Interim Fix APAR PK80596 or PK80627 (as specified below), or a Fix Pack containing the APAR (as specified below), resolves this issue.

Applying this Interim Fix APAR will not affect interoperability between IBM WebSphere Application Servers regardless of whether one or both WebSphere Application Servers have applied the fix.
Web services requests that contain digital signatures that are not generated by WebSphere Application Servers may be rejected after applying this fix for integrity consideration.

For WebSphere Application Server Version 6.1 Feature Pack for Web Services:

For V6.1 through 6.1.0.23:

Upgrade to Fix Pack 17, Fix Pack 21 or Fix Pack 23 (if not already at one of these levels), then
Apply Interim Fix APAR PK80627
--OR--
Apply Fix Pack 25, or later (6.1.0.25).

For IBM WebSphere Application Server for Distributed:

For V7.0 through 7.0.0.1:

Apply Fix Pack 3, or later (7.0.0.3).

For V6.1 through 6.1.0.23:

Upgrade to Fix Pack 17, Fix Pack 21, or Fix Pack 23 (if not already at one of these levels), then
Apply Interim Fix APAR PK80596
--OR--
Apply Fix Pack 25, or later (6.1.0.25).

For V6.0 through 6.0.2.33:

Upgrade to Refresh Pack 2 (6.0.2) (if not already at that level), then
Upgrade to Fix Pack 27, Fix Pack 31, or Fix Pack 33 (if not already at one of these levels), then
Apply Interim Fix APAR PK80596
--OR--
Apply Fix Pack 35, or later (6.0.2.35).

For IBM WebSphere Application Server for i5/OS:

For V7.0 through 7.0.0.1:

Apply the WebSphere Application Server PTF group which includes Fix Pack 3 (7.0.0.3) or later, according to the PTF group instructions.

For V6.1 through 6.1.0.23:

Apply Interim Fix APAR PK80596
--OR--
Apply the WebSphere Application Server PTF group which includes Fix Pack 25 (6.1.0.25) or later, according to the PTF group instructions.

For V6.0 through 6.0.2.33:

Apply Interim Fix APAR PK80596
--OR--
Apply the WebSphere Application Server PTF group which includes Fix Pack 35 (6.0.2.35) or later, according to the PTF group instructions.
- Note: Fix Packs 25, 29 and 33 are not provided for i5/OS.

For IBM WebSphere Application Server for z/OS:

For V7.0 through 7.0.0.1:

Apply APAR PK80596 from PTFs for 7.0.0.3 or later.

For V6.1 through 6.1.0.24:

Apply APAR PK80596 from PTFs for 6.1.0.25 or later.

For V6.0 through 6.0.2.34:

Apply APAR PK80596 from PTFs for 6.0.2.35 or later.

For WebSphere Application Server Version 6.1 Feature Pack for Web Services on z/OS:

For V6.1 through 6.1.0.24:

Apply APAR PK80627 from PTFs for 6.1.0.25 or later.

Additional documentation:
For additional details and information on WebSphere Application Server product updates:

For Distributed, see Recommended fixes for WebSphere Application Server.
For i5/OS, see WebSphere Application Server for i5/OS.
For z/OS, see WebSphere Application Server for z/OS

Cross Reference information

Segment	Product	Component	Platform	Version	Edition
Application Servers	WebSphere Application Server for z/OS	General	OS/390, Solaris, z/OS	7.0, 6.1, 6.0
Application Servers	WebSphere Application Server for z/OS		z/OS	7.0, 6.1, 6.0

IBM, the IBM logo and ibm.com are trademarks of International Business Machines Corp., registered in many jurisdictions worldwide. Other product and service names might be trademarks of IBM or other companies. A current list of IBM trademarks is available on the Web at "Copyright and trademark information" at www.ibm.com/legal/copytrade.shtml.

Document information


Product categories:

	Software

	Application Servers

	Distributed Application & Web Servers

	WebSphere Application Server for z/OS

	General


Operating system(s):
	AIX, HP-UX, IBM i, Linux, Solaris, Windows

Software version:
	6.0, 6.1, 7.0

Software edition:
	Base, Developer, Enterprise, Express, Network Deployment

Reference #:
	1384925

IBM Group:
	Software Group

Modified date:
	2009-07-22

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