CVE-2012-3451 in CXF
Summary
by MITRE
Apache CXF before 2.4.9, 2.5.x before 2.5.5, and 2.6.x before 2.6.2 allows remote attackers to execute unintended web-service operations by sending a header with a SOAP Action String that is inconsistent with the message body.
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Analysis
by VulDB Data Team • 12/14/2021
The vulnerability identified as CVE-2012-3451 represents a critical security flaw in the Apache CXF web services framework that affects multiple version ranges including 2.4.9 and below, 2.5.x versions prior to 2.5.5, and 2.6.x versions before 2.6.2. This vulnerability operates at the protocol level within web service communications and constitutes a significant threat to the integrity of service operations. The flaw specifically targets the SOAP Action header mechanism that is used to identify the intended operation within web service exchanges, creating a potential attack vector that could allow malicious actors to manipulate service behavior through carefully crafted header values.
The technical implementation of this vulnerability stems from insufficient validation of SOAP Action headers during message processing within the Apache CXF framework. When a client sends a SOAP message containing a mismatch between the SOAP Action header and the actual operation defined in the message body, the system fails to properly validate this inconsistency. This validation gap allows attackers to craft malicious requests where the header specifies one operation while the body contains instructions for a completely different operation. The framework's failure to enforce consistency between these elements creates an opportunity for unauthorized execution of unintended service operations. This issue maps directly to CWE-284 Access Control Bypass and CWE-347 Improper Verification of Cryptographic Signature, as it involves unauthorized access through header manipulation and lacks proper validation mechanisms.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential data exposure, service disruption, and unauthorized system access. Attackers could exploit this flaw to execute operations that they should not have access to, potentially leading to sensitive data disclosure, modification of service configurations, or even complete service compromise. The vulnerability is particularly dangerous because it operates at the application layer and can be exploited remotely without requiring authentication for the specific operations being targeted. This characteristic places the vulnerability within the ATT&CK framework's T1210 Lateral Movement category, as it enables attackers to move laterally through service interfaces. Additionally, the vulnerability could be classified under T1078 Valid Accounts as it leverages legitimate service interfaces to execute unauthorized operations, making detection more challenging.
Mitigation strategies for CVE-2012-3451 should focus on immediate patch deployment across all affected Apache CXF installations, ensuring that systems are updated to versions 2.4.9, 2.5.5, or 2.6.2 respectively. Organizations should also implement network-level controls including firewall rules that restrict access to web service endpoints and monitor for unusual SOAP Action header patterns. The implementation of proper input validation mechanisms within the application layer can provide additional defense in depth, ensuring that all SOAP headers are strictly validated against expected operation definitions. Security monitoring should include log analysis for inconsistencies between header values and message body content, as this pattern can serve as an indicator of exploitation attempts. Organizations should also consider implementing web application firewalls that can detect and block malformed SOAP requests, particularly those containing mismatched action headers. Regular security assessments and vulnerability scanning should be conducted to identify any remaining instances of affected software versions within the organization's infrastructure.