CVE-2019-16112

TylerTech Eagle 2018.3.11 deserializes untrusted user input, resulting in remote code execution via a crafted Java object to the recorder/ServiceManager?service=tyler.empire.settings.SettingManager URI.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• https://www.exploit-db.com/exploits/48462
• https://www.exploit-db.com/exploits/48462