PostgreSQL JDBC Driver <42.2.26/42.4.1 SQLi via ResultRow.refreshRow
CVE-2022-31197 Published on August 3, 2022
SQL Injection in ResultSet.refreshRow() with malicious column names in pgjdbc
PostgreSQL JDBC Driver (PgJDBC for short) allows Java programs to connect to a PostgreSQL database using standard, database independent Java code. The PGJDBC implementation of the `java.sql.ResultRow.refreshRow()` method is not performing escaping of column names so a malicious column name that contains a statement terminator, e.g. `;`, could lead to SQL injection. This could lead to executing additional SQL commands as the application's JDBC user. User applications that do not invoke the `ResultSet.refreshRow()` method are not impacted. User application that do invoke that method are impacted if the underlying database that they are querying via their JDBC application may be under the control of an attacker. The attack requires the attacker to trick the user into executing SQL against a table name who's column names would contain the malicious SQL and subsequently invoke the `refreshRow()` method on the ResultSet. Note that the application's JDBC user and the schema owner need not be the same. A JDBC application that executes as a privileged user querying database schemas owned by potentially malicious less-privileged users would be vulnerable. In that situation it may be possible for the malicious user to craft a schema that causes the application to execute commands as the privileged user. Patched versions will be released as `42.2.26` and `42.4.1`. Users are advised to upgrade. There are no known workarounds for this issue.
Vulnerability Analysis
CVE-2022-31197 can be exploited with network access, requires user interaction and a small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2022-31197. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a SQL Injection Vulnerability?
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.
CVE-2022-31197 has been classified to as a SQL Injection vulnerability or weakness.
Products Associated with CVE-2022-31197
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Affected Versions
pgjdbc:- Version >= 42.2.0, < 42.2.26 is affected.
- Version >= 42.3.0, < 42.4.1 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2022-31197
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| maven | org.postgresql:postgresql | >= 42.3.0, < 42.4.1 | 42.4.1 |
| maven | org.postgresql:postgresql | >= 42.2.0, < 42.2.26 | 42.2.26 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.