CVE-2022-45362 in Payment Gateway Plugin
Summary
by MITRE • 12/07/2023
Server-Side Request Forgery (SSRF) vulnerability in Paytm Paytm Payment Gateway.This issue affects Paytm Payment Gateway: from n/a through 2.7.0.
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Analysis
by VulDB Data Team • 12/30/2023
The CVE-2022-45362 vulnerability represents a critical server-side request forgery flaw within the Paytm Payment Gateway software ecosystem. This vulnerability stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied data before processing it within the payment gateway infrastructure. The flaw allows malicious actors to manipulate the system's request handling behavior by injecting crafted parameters that bypass normal access controls and routing restrictions.
The technical implementation of this vulnerability enables attackers to construct malicious requests that can traverse the payment gateway's internal network boundaries. This occurs when the system processes external URLs or endpoints without proper validation, allowing unauthorized access to internal resources that should remain protected. The vulnerability exists in the gateway's handling of payment request parameters, where input validation is insufficient to prevent attackers from crafting requests that redirect the system to internal services or resources.
From an operational perspective, this vulnerability poses significant risks to both the payment gateway provider and its merchants. Attackers could potentially access internal payment processing systems, customer databases, or other sensitive components within the organization's infrastructure. The impact extends beyond simple data exposure as the vulnerability could enable further exploitation through lateral movement within the network. The affected version range from n/a through 2.7.0 indicates that this flaw has existed for an extended period, potentially allowing attackers to exploit it for months or years without detection.
The vulnerability aligns with CWE-918, which specifically addresses server-side request forgery in web applications, and maps to ATT&CK technique T1071.004 for application layer protocol manipulation. This classification indicates that the attack vector involves manipulating application protocols to gain unauthorized access to internal resources. The attack surface is particularly concerning for payment gateways as they handle sensitive financial data and must maintain strict isolation between external users and internal systems.
Organizations using Paytm Payment Gateway should immediately implement mitigations including input validation controls, network segmentation, and access control restrictions. The most effective immediate solutions involve implementing strict URL validation, whitelisting approved endpoints, and deploying web application firewalls to filter malicious requests. Additionally, organizations should conduct comprehensive network audits to identify any unauthorized access that may have occurred due to this vulnerability. Regular security testing and monitoring of payment gateway communications should be implemented to detect similar vulnerabilities in other systems. The remediation process requires updating to patched versions of the payment gateway software and implementing proper security controls to prevent similar issues in future deployments.