High · published May 17, 2019
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.
| Product | Versions | Fixed in |
|---|---|---|
| fasterxml/jackson-databind | ≥ 2.0.0, < 2.6.7.3 | 2.6.7.3 |
| fasterxml/jackson-databind | ≥ 2.7.0, < 2.7.9.6 | 2.7.9.6 |
| fasterxml/jackson-databind | ≥ 2.8.0, < 2.8.11.4 | 2.8.11.4 |
| fasterxml/jackson-databind | ≥ 2.9.0, < 2.9.9 | 2.9.9 |
| debian/debian_linux | all versions | — |
| debian/debian_linux | all versions | — |