CVE-2015-7231 in Commerce Commonwealth Module
Summary
by MITRE
The Commerce Commonwealth (CBA) module 7.x-1.x before 7.x-1.5 for Drupal does not properly validate payments, which allows remote attackers to make a failed payment appear valid via a crafted URL, related to a "response from commweb."
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Analysis
by VulDB Data Team • 12/23/2017
The CVE-2015-7231 vulnerability affects the Commerce Commonwealth (CBA) module version 7.x-1.x before 7.x-1.5 for Drupal platforms, representing a critical payment validation flaw that undermines the integrity of financial transactions within e-commerce systems. This vulnerability specifically targets the module's handling of payment responses from the CommWeb payment gateway, creating a scenario where malicious actors can manipulate transaction states through crafted URL parameters. The issue stems from insufficient input validation and authentication mechanisms within the payment processing workflow, allowing unauthorized modification of payment status indicators.
The technical flaw manifests in the module's improper validation of payment responses received from the CommWeb gateway, where the system fails to adequately verify the authenticity and integrity of response parameters before accepting payment status changes. Attackers can exploit this weakness by constructing malicious URLs that simulate successful payment responses, causing the system to incorrectly mark failed transactions as valid. This vulnerability operates at the application layer and leverages weak cryptographic validation or missing signature verification mechanisms that should normally ensure payment response authenticity. The flaw directly relates to CWE-20, "Improper Input Validation," and CWE-347, "Improper Verification of Cryptographic Signature," as it fails to validate response integrity and lacks proper authentication checks.
From an operational perspective, this vulnerability presents a severe risk to e-commerce platforms using the affected Drupal module, potentially enabling financial fraud and revenue loss through unauthorized payment validation. Attackers can exploit this flaw to bypass payment processing controls, leading to situations where customers receive goods or services without proper payment confirmation, while merchants face discrepancies in their financial records and potential revenue theft. The impact extends beyond immediate financial loss to include potential regulatory compliance violations, customer trust erosion, and damage to business reputation. The vulnerability also creates opportunities for attackers to conduct systematic fraud operations by repeatedly exploiting the payment validation weakness across multiple transactions.
Mitigation strategies for CVE-2015-7231 should prioritize immediate patching of the Commerce Commonwealth module to version 7.x-1.5 or later, which contains the necessary validation fixes. Organizations should implement additional security controls including robust input validation, parameter sanitization, and cryptographic signature verification for all payment gateway communications. Network-level monitoring should be enhanced to detect anomalous payment response patterns and unauthorized transaction modifications. The vulnerability demonstrates the importance of proper security controls in payment processing systems, aligning with ATT&CK technique T1071.004 for Application Layer Protocol: DNS and T1566.001 for Phishing: Spearphishing Attachment. Organizations should also consider implementing transaction logging and audit trails that can detect and alert on suspicious payment status changes, along with regular security assessments of third-party payment integrations to prevent similar vulnerabilities in other components of the e-commerce infrastructure.