CVE-2016-7803 in Garoon
Summary
by MITRE
SQL injection vulnerability in the Cybozu Garoon 3.0.0 to 4.2.2 allows remote authenticated attackers to execute arbitrary SQL commands via "MultiReport" function.
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Analysis
by VulDB Data Team • 12/26/2020
The CVE-2016-7803 vulnerability represents a critical SQL injection flaw discovered in Cybozu Garoon versions 3.0.0 through 4.2.2, exposing organizations to significant security risks. This vulnerability specifically affects the MultiReport function within the application, which serves as a reporting mechanism for users to generate various data reports. The flaw allows authenticated attackers who already possess valid credentials to manipulate the application's database queries through carefully crafted input parameters. The vulnerability stems from insufficient input validation and sanitization within the MultiReport functionality, creating an avenue for malicious SQL commands to be executed directly on the underlying database system. This type of vulnerability falls under the Common Weakness Enumeration category CWE-89, which specifically addresses SQL injection weaknesses in software applications.
The technical exploitation of this vulnerability requires an attacker to first authenticate to the system with valid credentials, as the vulnerability is not accessible to unauthenticated users. Once authenticated, the attacker can manipulate the MultiReport function by injecting malicious SQL code into input fields that are not properly sanitized. The application fails to adequately validate or escape user-supplied data before incorporating it into database queries, allowing the attacker to bypass normal authentication mechanisms and potentially execute arbitrary commands on the database server. This could result in unauthorized data access, data modification, or even complete database compromise. The vulnerability's impact is particularly severe because it enables attackers to perform actions that would normally require administrative privileges, potentially leading to complete system compromise.
From an operational standpoint, this vulnerability poses significant risks to organizations utilizing Cybozu Garoon for business process management and collaboration. The MultiReport function is commonly used for generating various business reports, making it a frequently accessed feature that increases the attack surface. Organizations may experience unauthorized data exposure, data integrity issues, or potential service disruption if attackers successfully exploit this vulnerability. The authentication requirement does not mitigate the risk significantly, as compromised accounts or insider threats could still leverage this vulnerability. This vulnerability aligns with ATT&CK technique T1071.004 for Application Layer Protocol and T1566 for Phishing, as attackers may use compromised credentials to gain access to the system before exploiting this vulnerability. The impact extends beyond immediate data compromise to include potential regulatory compliance violations and reputational damage.
Organizations should implement immediate mitigations including applying the vendor-provided patches and updates released for this vulnerability, which typically involve input validation improvements and proper parameter sanitization. Network segmentation and monitoring should be enhanced to detect unusual database query patterns that might indicate exploitation attempts. Access controls should be reviewed and strengthened, including implementing multi-factor authentication and regular credential rotation policies. Database activity monitoring should be enabled to track and alert on suspicious SQL injection attempts. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other applications within the organization's infrastructure. The remediation process should include thorough code reviews focusing on input validation mechanisms and proper database query construction practices to prevent similar vulnerabilities from emerging in the future.