~ / search / GHSA-qmqc-x3r4-6v39

GHSA-qmqc-x3r4-6v39

Polymorphic deserialization of malicious object in jackson-databind

Source: GitHub Advisory Database (reviewed) High CVE-2019-14893

Packages

EcosystemPackageAffectedFixed in
Maven com.fasterxml.jackson.core:jackson-databind >= 2.9.0, < 2.9.10 2.9.10

Details

As written in the advisory (Markdown source, shown as plain text).

A flaw was discovered in FasterXML jackson-databind in all versions before 2.9.10 and 2.10.0, where it would permit polymorphic deserialization of malicious objects using the xalan JNDI gadget when used in conjunction with polymorphic type handling methods such as `enableDefaultTyping()` or when @JsonTypeInfo is using `Id.CLASS` or `Id.MINIMAL_CLASS` or in any other way which ObjectMapper.readValue might instantiate objects from unsafe sources. An attacker could use this flaw to execute arbitrary code.

References

External links from the advisory. They lead to third-party sites.