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.
Indicators of Compromise
Apache CXF versions prior to 2.5.10, 2.6.7, and 2.7.4 are vulnerable.
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.
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.
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.
Apache has released a security advisory at the following link: CVE-2012-5575
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:
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