Source: cve@mitre.org
The Domain gateway in BEA Tuxedo 7.1 does not perform authorization checks for imported services and qspaces on remote domains, even when an ACL exists, which allows users to access services in a remote domain.
BEA Tuxedo 7.1 is vulnerable to a critical security flaw where the Domain gateway fails to enforce access control lists (ACLs) for imported services. This allows unauthorized users to remotely access and potentially manipulate sensitive data and services within the Tuxedo environment, leading to data breaches and system compromise.
Step 1: Reconnaissance: The attacker identifies the target BEA Tuxedo 7.1 system and its exposed services, potentially using network scanning tools or publicly available information. Step 2: Service Enumeration: The attacker determines the names and functionalities of the services available within the remote domain. Step 3: Crafting the Request: The attacker crafts a malicious request to invoke a service within the remote domain. This request bypasses the intended authorization checks. Step 4: Request Transmission: The attacker sends the crafted request to the vulnerable Domain gateway. Step 5: Service Execution: The Domain gateway, due to the vulnerability, forwards the request to the target service without proper authorization checks. Step 6: Data Access/Manipulation: The target service executes the attacker's request, potentially allowing access to sensitive data, modification of data, or other malicious actions.
The root cause of CVE-2001-1477 lies in a design flaw within the Domain gateway component of BEA Tuxedo 7.1. Specifically, the gateway does not properly validate authorization when handling requests for imported services and qspaces from remote domains. The absence of these checks means that any user, regardless of their permissions or ACL settings, can potentially invoke services residing in the remote domain. The flaw is likely related to the lack of proper authentication and authorization checks during the inter-domain communication process. The gateway trusts the incoming requests without verifying the user's identity or their permitted access rights. This oversight allows attackers to bypass security measures and gain unauthorized access to critical resources. The vulnerability is not a buffer overflow or race condition, but rather a logical flaw in the access control implementation.
Due to the age of the vulnerability, it's unlikely to be actively exploited by sophisticated APTs. However, it could be leveraged by less sophisticated actors or used in conjunction with other vulnerabilities. This CVE is not listed in the CISA KEV (Known Exploited Vulnerabilities) catalog.
Monitor network traffic for unusual requests to the Domain gateway, especially those originating from untrusted sources.
Analyze Tuxedo logs for unauthorized service invocations or access attempts.
Implement intrusion detection systems (IDS) with rules specifically designed to detect suspicious activity related to the Domain gateway.
Review ACL configurations to ensure they are correctly implemented and enforced.
Monitor for changes in service configurations or unauthorized service deployments.
Upgrade to a supported version of BEA Tuxedo that addresses the vulnerability. This is the primary and most effective remediation.
If upgrading is not immediately feasible, implement strong network segmentation to isolate the Tuxedo environment from untrusted networks.
Review and harden the ACL configurations to restrict access to services and qspaces.
Implement a Web Application Firewall (WAF) to filter malicious requests.
Regularly audit the Tuxedo configuration and security settings.
Implement a robust monitoring and logging solution to detect and respond to suspicious activity.