CVE-2020-25695 : What You Need to Know
Learn about CVE-2020-25695, a PostgreSQL vulnerability allowing unauthorized SQL function execution. Find mitigation steps and system protection measures here.
A flaw in PostgreSQL versions before 13.1, 12.5, 11.10, 10.15, 9.6.20, and 9.5.24 allows attackers to execute SQL functions as a superuser, posing risks to data confidentiality, integrity, and system availability.
Understanding CVE-2020-25695
This CVE identifies a vulnerability in PostgreSQL versions that could lead to unauthorized execution of SQL functions.
What is CVE-2020-25695?
The vulnerability in PostgreSQL versions before specific releases allows attackers with certain permissions to execute SQL functions as a superuser, potentially compromising data and system availability.
The Impact of CVE-2020-25695
The primary risks associated with this vulnerability include threats to data confidentiality, integrity, and system availability.
Technical Details of CVE-2020-25695
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The flaw in PostgreSQL versions before 13.1, 12.5, 11.10, 10.15, 9.6.20, and 9.5.24 enables attackers with specific permissions to execute SQL functions as a superuser.
Affected Systems and Versions
- All PostgreSQL versions before 13.1, 12.5, 11.10, 10.15, 9.6.20, and 9.5.24
Exploitation Mechanism
Attackers with permission to create non-temporary objects in at least one schema can exploit this vulnerability to execute arbitrary SQL functions under the identity of a superuser.
Mitigation and Prevention
Protecting systems from CVE-2020-25695 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update PostgreSQL to versions 13.1, 12.5, 11.10, 10.15, 9.6.20, or 9.5.24 to mitigate the vulnerability
- Restrict permissions for creating non-temporary objects to minimize the attack surface
Long-Term Security Practices
- Regularly monitor and audit database activities to detect any unauthorized SQL function executions
- Implement the principle of least privilege to limit user permissions and access
Patching and Updates
- Apply security patches provided by PostgreSQL to address the vulnerability