All versions of bson before 1.1.4 are vulnerable to Deserialization of Untrusted Data. The package will ignore an unknown value for an objects _bsotype, leading to cases where an object is serialized as a document rather than the intended BSON type.
Weakness
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Bson | Mongodb | 1.0.0 (including) | 1.1.4 (excluding) |
| Node-mongodb | Ubuntu | eoan | * |
| Node-mongodb | Ubuntu | focal | * |
| Node-mongodb | Ubuntu | trusty | * |
| Node-mongodb | Ubuntu | upstream | * |
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.