Description
pgjdbc, the PostgreSQL JDBC Driver, allows attacker to inject SQL if using PreferQueryMode=SIMPLE. Note this is not the default. In the default mode there is no vulnerability. A placeholder for a numeric value must be immediately preceded by a minus. There must be a second placeholder for a string value after the first placeholder; both must be on the same line. By constructing a matching string payload, the attacker can inject SQL to alter the query,bypassing the protections that parameterized queries bring against SQL Injection attacks. Versions before 42.7.2, 42.6.1, 42.5.5, 42.4.4, 42.3.9, and 42.2.28 are affected.
EPSS Score:
1%
Comprehensive Technical Analysis of EUVD-2024-0465
1. Vulnerability Assessment and Severity Evaluation
Vulnerability Description:
The PostgreSQL JDBC Driver (pgjdbc) contains a SQL injection vulnerability when using the PreferQueryMode=SIMPLE configuration. This vulnerability allows an attacker to inject malicious SQL code by exploiting specific conditions involving numeric and string placeholders.
Severity Evaluation:
- Base Score: 10.0 (Critical)
- Base Score Version: CVSS 3.1
- Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
The CVSS score of 10.0 indicates a critical vulnerability. The high severity is due to the potential for complete compromise of confidentiality, integrity, and availability without requiring user interaction or privileges.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Network Attack Vector (AV:N): The vulnerability can be exploited remotely over the network.
- Low Attack Complexity (AC:L): The attack does not require specialized conditions or knowledge beyond the specific configuration and payload construction.
- No Privileges Required (PR:N): The attacker does not need any special privileges to exploit the vulnerability.
- No User Interaction (UI:N): The attack does not require any interaction from the user.
Exploitation Methods: An attacker can craft a SQL payload that matches the specific conditions:
- A numeric placeholder preceded by a minus sign.
- A string placeholder immediately following the numeric placeholder on the same line.
By injecting this payload, the attacker can alter the SQL query, bypassing the protections provided by parameterized queries.
3. Affected Systems and Software Versions
Affected Versions:
- pgjdbc versions before 42.7.2
- pgjdbc versions before 42.6.1
- pgjdbc versions before 42.5.5
- pgjdbc versions before 42.4.4
- pgjdbc versions before 42.3.9
- pgjdbc versions before 42.2.28
Systems at Risk:
Any system using the affected versions of pgjdbc with the PreferQueryMode=SIMPLE configuration is at risk. This includes applications and services that rely on PostgreSQL databases and use the pgjdbc driver for database connectivity.
4. Recommended Mitigation Strategies
Immediate Mitigation:
- Upgrade pgjdbc: Upgrade to a patched version of pgjdbc (42.7.2 or later).
- Configuration Change: Avoid using
PreferQueryMode=SIMPLEand switch to the default mode, which is not vulnerable.
Long-Term Mitigation:
- Regular Patching: Implement a regular patching and update schedule for all software components.
- Code Review: Conduct thorough code reviews to ensure that parameterized queries are used correctly and securely.
- Security Testing: Incorporate security testing, including SQL injection testing, into the development lifecycle.
5. Impact on European Cybersecurity Landscape
Potential Impact:
- Data Breaches: The vulnerability can lead to unauthorized access to sensitive data, resulting in data breaches.
- Service Disruption: Exploitation can cause service disruptions, affecting the availability of critical applications.
- Compliance Issues: Organizations may face compliance issues with regulations such as GDPR if sensitive data is compromised.
Broader Implications: The vulnerability highlights the importance of secure coding practices and regular updates in maintaining the cybersecurity posture of organizations. It underscores the need for continuous monitoring and prompt response to vulnerabilities.
6. Technical Details for Security Professionals
Technical Analysis:
- Vulnerability Type: SQL Injection
- Affected Component: pgjdbc (PostgreSQL JDBC Driver)
- Specific Condition: The vulnerability is triggered when
PreferQueryMode=SIMPLEis used, and specific placeholder conditions are met.
Exploitation Details:
- Payload Construction: The attacker needs to construct a payload with a numeric placeholder preceded by a minus sign and a string placeholder immediately following it on the same line.
- Example Payload:
SELECT * FROM users WHERE id = ? AND name = ?with placeholders-1and' OR '1'='1.
Detection and Monitoring:
- Log Analysis: Monitor database logs for unusual query patterns that may indicate SQL injection attempts.
- Intrusion Detection Systems (IDS): Implement IDS to detect and alert on suspicious database activities.
References:
By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of SQL injection attacks and protect their critical data and services.