In Apache Linkis <=1.5.0, due to the lack of effective filtering of parameters, an attacker configuring malicious
db2
parameters in the DataSource Manager Module will result in jndi injection. Therefore, the parameters in the DB2 URL should be blacklisted.
This attack requires the attacker to obtain an authorized account from Linkis before it can be carried out.
Versions of Apache Linkis
<=1.5.0
will be affected. We recommend users upgrade the version of Linkis to version 1.6.0.
The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linkis | Apache | 1.4.0 (including) | 1.6.0 (excluding) |
It is often convenient to serialize objects for communication or to save them for later use. However, deserialized data or code can often be modified without using the provided accessor functions if it does not use cryptography to protect itself. Furthermore, any cryptography would still be client-side security – which is a dangerous security assumption. Data that is untrusted can not be trusted to be well-formed. When developers place no restrictions on “gadget chains,” or series of instances and method invocations that can self-execute during the deserialization process (i.e., before the object is returned to the caller), it is sometimes possible for attackers to leverage them to perform unauthorized actions, like generating a shell.