CVE-2020-22807 in vTiger
Summary
by MITRE • 04/30/2021
An issue was dicovered in vtiger crm 7.2. Union sql injection in the calendar exportdata feature.
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Analysis
by VulDB Data Team • 05/03/2021
The vulnerability CVE-2020-22807 represents a critical sql injection flaw discovered in vtiger crm version 7.2 within the calendar exportdata feature. This vulnerability falls under the category of unauthorized data access and information disclosure, where an attacker can manipulate database queries through malicious input parameters. The issue specifically affects the calendar module's export functionality, which allows users to export calendar events and related data to various formats including csv and xml. The flaw stems from insufficient input validation and sanitization within the exportdata endpoint, enabling attackers to inject malicious sql commands that can be executed against the underlying database.
The technical implementation of this vulnerability occurs when the calendar export feature processes user-supplied parameters without proper sanitization or parameterization. Attackers can exploit this by crafting malicious input that gets directly incorporated into sql queries executed by the application. This union-based sql injection allows for complex attack vectors where attackers can extract sensitive information from database tables, potentially including user credentials, personal data, and business information. The vulnerability is particularly dangerous because calendar data often contains sensitive business information, meeting details, and personal schedules that could be valuable to attackers.
The operational impact of CVE-2020-22807 extends beyond simple data theft, as it provides attackers with a pathway for further exploitation within the target environment. Successful exploitation can lead to complete database compromise, allowing attackers to read, modify, or delete sensitive information. The vulnerability can be exploited remotely without authentication, making it particularly dangerous for organizations that do not properly segment their network access. Organizations using vtiger crm 7.2 may face regulatory compliance violations, reputational damage, and potential financial losses due to unauthorized access to sensitive business data. The attack surface is broad as calendar exports are commonly used features that may be accessed by various user roles within the organization.
Mitigation strategies for CVE-2020-22807 should focus on immediate patching of the vtiger crm application to the latest available version that addresses this specific vulnerability. Organizations should implement proper input validation and parameterized queries throughout the application to prevent similar issues in other components. Network segmentation and access controls should be enforced to limit exposure of the calendar module to only authorized users. Security monitoring should be enhanced to detect unusual export activity patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-89 sql injection and can be mapped to ATT&CK techniques such as T1071.004 application layer protocol and T1005 data from local system, highlighting the need for comprehensive security controls beyond simple patch management. Organizations should also consider implementing web application firewalls and database activity monitoring solutions to provide additional layers of protection against similar sql injection attacks.