CVE-2020-27147 in PartnerExpress
Summary
by MITRE • 12/15/2020
The REST API component of TIBCO Software Inc.'s TIBCO PartnerExpress contains a vulnerability that theoretically allows an unauthenticated attacker with network access to obtain an authenticated login URL for the affected system via a REST API. Affected releases are TIBCO Software Inc.'s TIBCO PartnerExpress: version 6.2.0.
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Analysis
by VulDB Data Team • 12/18/2020
The vulnerability identified as CVE-2020-27147 resides within the REST API implementation of TIBCO PartnerExpress version 6.2.0, representing a critical security flaw that undermines the authentication mechanisms of this enterprise integration platform. This vulnerability specifically affects the TIBCO Software Inc. product suite that facilitates business process integration and partner collaboration. The flaw manifests in the REST API component's improper handling of authentication requests, creating a pathway for unauthorized access that could potentially compromise the entire system. The vulnerability is classified under CWE-287 which addresses improper authentication issues, making it a direct descendant of well-known authentication weakness patterns that have plagued enterprise software systems for years.
The technical exploitation of this vulnerability occurs when an unauthenticated attacker gains network access to the affected system and leverages a specific API endpoint that generates authenticated login URLs without proper verification of the requester's credentials. This flaw essentially allows the attacker to obtain valid authentication tokens or URLs that would normally require legitimate user credentials, effectively bypassing the intended authentication flow. The mechanism by which this occurs typically involves the API endpoint failing to validate the identity of the requestor before returning authentication information, creating a dangerous condition where any network-connected attacker can theoretically obtain access credentials. This vulnerability aligns with ATT&CK technique T1566 which covers credential harvesting through social engineering and API exploitation, though in this case the attack vector is more direct through API misconfiguration rather than social manipulation.
The operational impact of CVE-2020-27147 extends beyond simple unauthorized access, as it creates a potential gateway for more sophisticated attacks within the TIBCO PartnerExpress environment. An attacker who successfully exploits this vulnerability could gain access to sensitive integration workflows, business partner data, and potentially escalate privileges within the broader TIBCO ecosystem. The implications are particularly severe in enterprise environments where TIBCO PartnerExpress typically handles critical business processes and integrates with multiple systems, making the compromised environment a valuable target for lateral movement and data exfiltration. The vulnerability's presence in version 6.2.0 suggests this was not a newly introduced flaw but rather a persistent issue that affected a specific release, indicating potential gaps in the software's security testing and validation processes.
Organizations utilizing TIBCO PartnerExpress version 6.2.0 should immediately implement mitigations including network segmentation to restrict access to the REST API endpoints, implementing additional authentication layers, and monitoring for unauthorized access attempts. The recommended approach involves patching the software to a version that addresses the authentication flaw, though in the interim period organizations should consider disabling or restricting access to the vulnerable API endpoints. Security teams should also implement comprehensive logging and monitoring of API access patterns to detect potential exploitation attempts, as the vulnerability's nature makes it particularly difficult to identify through traditional security controls. This vulnerability serves as a reminder of the critical importance of API security in enterprise integration platforms and the necessity of robust authentication mechanisms throughout all system components. The issue demonstrates how seemingly minor authentication flaws can create significant security risks in complex integration environments where multiple systems interconnect and share sensitive business data.