Overview
A significant SQL injection vulnerability, identified as CVE-2025-65896, has been discovered in the long2ice asyncmy library, specifically affecting versions up to and including 0.2.10. This flaw allows malicious actors to inject and execute arbitrary SQL commands through carefully crafted dictionary keys, potentially leading to severe data breaches and system compromise.
Technical Details
The vulnerability resides in how the asyncmy library processes dictionary keys when constructing SQL queries. By manipulating these keys, an attacker can inject malicious SQL code that bypasses intended sanitization and is then executed directly against the database. This can occur wherever the library constructs SQL statements based on user-supplied dictionary data. Exploitation relies on the application passing unsanitized or insufficiently sanitized dictionary data to the asyncmy library’s SQL query generation functions.
Here’s a simplified example of how the vulnerability might be exploited:
# Vulnerable code snippet (Illustrative)
import asyncmy.cursors
async def query_db(data: dict):
async with asyncmy.connect(host='localhost', user='user', password='password', db='test') as conn:
async with conn.cursor(asyncmy.cursors.DictCursor) as cur:
# Vulnerable: Uses dictionary keys directly in SQL construction
query = f"SELECT * FROM users WHERE username = '{data['username']}'"
await cur.execute(query)
result = await cur.fetchall()
return result
# Example malicious input
malicious_data = {'username': "'; DROP TABLE users; --"} # SQL Injection payload!
# In a real-world scenario, this malicious data would be passed to the
# `query_db` function. The resulting SQL would be:
# SELECT * FROM users WHERE username = ''; DROP TABLE users; --'
This is a simplified example and the actual injection point might vary depending on the application using the library. However, it illustrates the principle of injecting arbitrary SQL via manipulated dictionary keys.
CVSS Analysis
Currently, a CVSS score has not yet been assigned for CVE-2025-65896. However, given the potential for arbitrary SQL command execution, the severity is likely to be assessed as Critical. The absence of a CVSS score should not downplay the urgency of addressing this vulnerability.
Possible Impact
A successful SQL injection attack via CVE-2025-65896 could lead to severe consequences, including:
- Data Breach: Unauthorized access to sensitive data, such as user credentials, financial information, and personal details.
- Data Manipulation: Modification or deletion of critical data, leading to data integrity issues and business disruption.
- System Compromise: Gaining control of the database server, potentially allowing further attacks on the wider infrastructure.
- Denial of Service (DoS): Crashing the database server or making it unavailable to legitimate users.
Mitigation and Patch Steps
To mitigate the risk posed by CVE-2025-65896, the following steps are highly recommended:
- Upgrade asyncmy: Immediately upgrade to a patched version of the
asyncmylibrary once a fix is released. Monitor the asyncmy GitHub repository and related security advisories for updates. Note that as of this writing, there is no publicly available patch. Consult the repository for updates. - Input Sanitization: Implement robust input sanitization and validation techniques to prevent malicious SQL code from being injected through dictionary keys. Use parameterized queries or prepared statements wherever possible. Never directly concatenate user input into SQL queries.
- Web Application Firewall (WAF): Deploy a WAF to detect and block SQL injection attempts. Configure the WAF with rules that specifically target this vulnerability.
- Least Privilege: Ensure that the database user account used by the application has only the necessary privileges required to perform its functions. Avoid using a highly privileged account like ‘root’.
- Regular Security Audits: Conduct regular security audits and penetration testing to identify and address potential vulnerabilities in your applications and infrastructure.
