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Vulnerability Alert

Apache CXF XML Encryption Backward Compatibility Insecure Encryption Vulnerability

 
Threat Type:CWE-310: Cryptographic Issues
IntelliShield ID:29384
Version:7
First Published:2013 May 21 15:46 GMT
Last Published:2013 October 17 14:43 GMT
Port: Not available
CVE:CVE-2012-5575
BugTraq ID:60043
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Harassment
CVSS Base:7.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:5.8
 
 
Version Summary:Red Hat has released an additional security advisory and updated packages to address the Apache CXF XML encryption backward compatibility insecure encryption vulnerability.
 
 
Description
A vulnerability in Apache CXF could allow an unauthenticated, remote attacker to obtain sensitive information.

The vulnerability is due to improper implementation of the XML Encryption standard by the affected software. An attacker could exploit this vulnerability by conducting XML encryption backward compatibility attacks. Successful exploitation could allow the attacker to obtain sensitive information from a targeted system.

Apache has confirmed the vulnerability and released updated software.
 
Warning Indicators
Apache CXF versions prior to 2.5.10, 2.6.7, and 2.7.4 are vulnerable.
 
IntelliShield Analysis
The vulnerability is in the insecure legacy cryptosystems. When used, an attacker may expose flaws such as CVE-2011-1096 and CVE-2011-2487 to conduct ciphertext attacks to obtain entire plain text from cryptograms and symmetric keys.

This vulnerability can be prevented by running automatic checks but it runs only when WS-SecurityPolicy is used to enforce security requirements.
 
Vendor Announcements
Apache has released a security advisory at the following link: CVE-2012-5575

Red Hat has released an official CVE statement and security advisories for bug 880443 at the following links: CVE-2012-5575, RHSA-2013:0839, RHSA-2013:0833, RHSA-2013:0834, RHSA-2013-0873, RHSA-2013-0874, RHSA-2013-0875, RHSA-2013-0876, RHSA-2013-0943, RHSA-2013-0953, RHSA-2013:1006, RHSA-2013-1143, and RHSA-2013:1437
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to recover plain text from cryptograms and symmetric keys. Successful exploitation could allow the attacker to access sensitive information that could be used to launch further attacks.
 
Technical Information
The vulnerability exists because the affected software uses insecure legacy cryptosystem as the XML Encryption standard.

An unauthenticated, remote attacker could exploit this vulnerability by conducting XML encryption backward compatibility attacks. The attacker could force a server to use insecure legacy cryptosystems, even when secure cryptosystems were enabled on endpoints. If successful, the affected software may attempt to decrypt arbitrary ciphertexts without determining if the algorithm corresponds to the given encryption algorithm defined by the WS-SecurityPolicy AlgorithmSuite. This could allow the attacker to obtain plain text from cryptograms and symmetric keys.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to allow only trusted users to have network access.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to monitor affected systems.
 
Patches/Software
Apache has released updated software at the following links:

Apache CXF 2.5.10
Apache CXF 2.6.7
Apache CXF 2.7.4

Red Hat has released updated software for registered subscribers at the following link: Red Hat Network. Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.

Red Hat has released updated packages for registered users at the following links:

JBoss Enterprise Application Platform 6.1.0
JBoss Enterprise Application Platform 5.2.0
JBoss Enterprise Web Platform 5.2.0
JBoss SOA Platform 5.3.1
JBoss Enterprise Portal Platform 5.2.2
JBoss BRMS 5.3.1
JBoss SOA Platform 4.3 CP05
JBoss Portal 4.3 CP07
Red Hat JBoss Portal 6.1.0

 
Alert History
 

Version 6, August 8, 2013, 7:10 PM: Red Hat has released an additional security advisory and updated packages to address the Apache CXF XML encryption backward compatibility insecure encryption vulnerability.

Version 5, July 2, 2013, 2:49 PM: Red Hat has released an additional security advisory and updated packages to address the Apache CXF XML encryption backward compatibility insecure encryption vulnerability.

Version 4, June 19, 2013, 4:04 PM: Red Hat has released an additional security advisory and updated packages to address the Apache CXF XML encryption backward compatibility insecure encryption vulnerability.

Version 3, June 13, 2013, 2:46 PM: Red Hat has released additional security advisory and updated packages to address the Apache CXF XML encryption backward compatibility insecure encryption vulnerability.

Version 2, May 29, 2013, 4:53 PM: Red Hat has released additional security advisories and updated packages to address the Apache CXF XML encryption backward compatibility insecure encryption vulnerability.

Version 1, May 21, 2013, 3:46 PM: Apache CXF contains a vulnerability that could allow an unauthenticated, remote attacker to obtain sensitive information from a targeted system. Updates are available.



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Apache Software FoundationCXF 2.5 .0, .1, .2, .3, .4, .5, .6, .7, .8, .9 | 2.6 .0, .1, .2, .3, .4, .5, .6 | 2.7 .0, .1, .2, .3

Associated Products:
Red Hat, Inc.JBoss Enterprise Web Platform 5 EL4 IA-32, x86_64 | EL5 IA-32, x86_64 | EL6 IA-32, x86_64
Red Hat, Inc.JBoss Enterprise Application Platform 5.2.0 Base | 5 EL4 IA-32, x86_64 | 5 EL5 IA-32, x86_64 | 5 EL6 IA-32, x86_64 | 6.0.1 Base | 6 EL5 Base, IA-32, x86_64 | 6 EL6 Base, IA-32, x86_64
Red Hat, Inc.JBoss Enterprise Portal Platform 4.3 CP07 | 5.2 .2
Red Hat, Inc.JBoss Enterprise SOA Platform 4.3.0 CP05 | 5.3.1 Base
Red Hat, Inc.JBoss Portal Platform 6.0.0 Base
Red Hat, Inc.JBoss Enterprise BRMS Platform 5.3 .0, .1




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