CVE-2019-7585 in Super CMS
Summary
by MITRE
An issue was discovered in Waimai Super Cms 20150505. web/Lib/Action/PublicAction.class.php allows time-based SQL Injection via the param array parameter to the /index.php?m=public&a=checkemail URI.
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Analysis
by VulDB Data Team • 07/09/2023
The vulnerability identified as CVE-2019-7585 represents a critical time-based sql injection flaw within the Waimai Super Cms version 20150505. This issue resides in the web/Lib/Action/PublicAction.class.php file where the application fails to properly sanitize user input passed through the param array parameter. The attack vector specifically targets the /index.php?m=public&a=checkemail URI endpoint, making it accessible to remote attackers who can exploit this weakness without authentication. The vulnerability stems from insufficient input validation and parameter sanitization mechanisms that allow malicious actors to inject sql commands through crafted time-based payloads.
The technical exploitation of this vulnerability follows a classic time-based sql injection pattern where attackers construct malicious sql queries that cause the database to delay responses based on boolean conditions. When the application processes the unchecked param array parameter, it directly incorporates user-supplied data into sql execution contexts without proper escaping or parameterization. This flaw aligns with CWE-89 which categorizes improper neutralization of special elements used in sql commands as a primary weakness. The vulnerability enables attackers to extract database information through timing variations in response times, making it particularly dangerous as it operates silently and can bypass traditional security measures.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete database compromise and potential system takeover. Attackers can leverage this weakness to enumerate database schemas, extract sensitive user credentials, personal information, and business-critical data stored within the cms. The time-based nature of the injection means that attackers can perform blind sql injection attacks that require multiple requests to gather information, but the process becomes significantly more efficient due to the timing mechanism. This vulnerability directly maps to attack techniques described in the attack tree under the database access category, specifically targeting the credential access and data extraction phases of the attack lifecycle.
Mitigation strategies for CVE-2019-7585 require immediate implementation of proper input validation and parameterized query execution throughout the affected application. Organizations should implement strict input sanitization routines that filter and validate all user-supplied parameters before processing them in sql contexts. The recommended approach involves adopting prepared statements and parameterized queries to eliminate the possibility of sql injection regardless of input content. Additionally, implementing web application firewalls with sql injection detection capabilities can provide additional layers of protection. Regular security assessments and code reviews should focus on identifying similar patterns across the entire codebase, particularly in legacy systems where input validation mechanisms may be inadequately implemented. The vulnerability demonstrates the critical importance of maintaining up-to-date security practices even in older software versions, as the exploitation techniques remain consistent across different platforms and frameworks.