CVE-2023-1873

Vulnerability

An SQL injection vulnerability exists in Faturamatik Bircard, as disclosed in CVE-2023-1873. The software fails to properly neutralize special elements used in an SQL command, allowing injection of arbitrary SQL statements. The vulnerability affects all versions of Bircard prior to 23.04.05 [1]. The exact vulnerable endpoint is not detailed in the available references, but the description confirms that the issue stems from improper input sanitization within the application's database queries.

Exploitation

An attacker can exploit this vulnerability by sending crafted input to the vulnerable component, likely through HTTP requests to the Bircard application. No authentication is required, and the attack complexity is low, as indicated by the CVSS v3 base score of 9.8. The attacker does not need any special privileges or user interaction to execute the injection [1]. The exact sequence of steps is not described, but typical SQL injection exploitation involves inserting malicious SQL payloads into input fields such as form parameters or URL query strings.

Impact

Successful exploitation allows the attacker to execute arbitrary SQL commands against the database backend. This can lead to unauthorized access to sensitive data, including the ability to read, modify, or delete database records. The impact may include complete compromise of confidentiality, integrity, and availability of the application and its data. The CVSS v3 base score of 9.8 (Critical) confirms the high severity, with potential for full system takeover depending on database permissions [1].

Mitigation

The vendor has released a fix in version 23.04.05 of Bircard [1]. Users should upgrade to this version or later to remediate the vulnerability. No workarounds are provided in the available references. If upgrading is not immediately possible, network-level controls such as web application firewalls (WAF) may provide temporary mitigation by filtering malicious SQL patterns, but this is not a complete fix.