Description
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.21.0 until 2.21.4 and 3.1.4, POJOPropertiesCollector._renameProperties() allows a property with @JsonProperty("renamed") on the getter and @JsonIgnore on the setter to be renamed rather than dropped. With MapperFeature.INFER_PROPERTY_MUTATORS enabled (default), the private backing field is retained; during deserialization BeanDeserializerFactory.addBeanProps() sees hasField()==true, builds a FieldProperty, and makes the backing field writable. An attacker supplying the renamed JSON key writes the backing field directly, bypassing the @JsonIgnore on the setter. This vulnerability is fixed in 3.1.4.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected products
- FasterXML / jackson-databind>= 2.21.0, < 2.21.4 – >= 2.21.0, < 2.21.4
- FasterXML / jackson-databind>= 3.0.0, < 3.1.4 – >= 3.0.0, < 3.1.4
References
- VENDOR_ADVISORYhttps://github.com/FasterXML/jackson-databind/security/advisories/GHSA-9fxm-vc8v-hj55
- PATCHhttps://github.com/FasterXML/jackson-databind/pull/5967
- PATCHhttps://github.com/FasterXML/jackson-databind/pull/5968
- PATCHhttps://github.com/FasterXML/jackson-databind/commit/c3d56dd25d52319828147c5b9aeabf2d485c250a
- PATCHhttps://github.com/FasterXML/jackson-databind/commit/e88cb17006b6af4883b973058f0bb6486e5074af