#VU25834 Deserialization of Untrusted Data in jackson-databind


Published: 2020-03-09

Vulnerability identifier: #VU25834

Vulnerability risk: High

CVSSv3.1:

CVE-ID: CVE-2019-14893

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
jackson-databind
Universal components / Libraries / Libraries used by multiple products

Vendor: FasterXML

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data 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. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

jackson-databind: 2.8.0 - 2.8.11.4, 2.9.0 - 2.9.9


CPE

External links
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14893
http://github.com/FasterXML/jackson-databind/issues/2469


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


Latest bulletins with this vulnerability