CVE-2020-24600 in capexweb
Summary
by MITRE • 12/27/2022
Shilpi CAPExWeb 1.1 allows SQL injection via a servlet/capexweb.cap_sendMail GET request.
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Analysis
by VulDB Data Team • 01/24/2023
The vulnerability identified as CVE-2020-24600 affects Shilpi CAPExWeb version 1.1, a web-based application designed for capital expenditure management and financial tracking. This application provides a servlet interface that handles various administrative functions including email notification capabilities. The specific flaw manifests within the servlet path /servlet/capexweb.cap_sendMail which processes GET requests containing parameters that are not properly sanitized before being incorporated into database queries. This represents a critical security weakness that could allow unauthorized users to execute malicious database commands and potentially gain access to sensitive financial data.
The technical implementation of this SQL injection vulnerability stems from improper input validation within the cap_sendMail servlet functionality. When a GET request is made to this endpoint, the application accepts user-supplied parameters without adequate sanitization or parameterization. Attackers can manipulate the request parameters to inject malicious SQL code that gets executed against the underlying database. This occurs because the application directly concatenates user input into SQL query strings rather than utilizing prepared statements or parameterized queries. The vulnerability falls under CWE-89 which specifically addresses SQL injection flaws where untrusted data is incorporated into SQL commands without proper validation or escaping mechanisms.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise and financial data manipulation. An attacker exploiting this vulnerability could extract sensitive information including employee details, financial records, transaction histories, and potentially access control credentials. The attack surface is particularly concerning given that CAPExWeb applications typically handle critical financial data and business operations. The vulnerability allows for both data retrieval and modification attacks, meaning an attacker could not only read confidential information but also alter financial records, potentially leading to significant financial loss and regulatory compliance violations. This weakness directly impacts the confidentiality, integrity, and availability of the targeted system.
Mitigation strategies for this vulnerability should focus on immediate remediation through proper input validation and parameterization of database queries. Organizations should implement prepared statements or parameterized queries throughout the application codebase to ensure that user input is never directly concatenated into SQL commands. Additionally, input sanitization measures including length validation, character set restrictions, and regular expression filtering should be implemented at the application level. Network-level protections such as web application firewalls and intrusion detection systems can provide additional defense-in-depth measures. The remediation process should also include comprehensive code review to identify and address similar vulnerabilities across the entire application stack. Regular security testing including automated scanning and manual penetration testing should be implemented to prevent similar issues from emerging in future releases. This vulnerability demonstrates the critical importance of following secure coding practices and adheres to ATT&CK technique T1190 which describes the exploitation of vulnerabilities in web applications through SQL injection attacks.