Quantum Secular Labs / Blog / Advisories

CVE-2018-14720: Fasterxml Jackson Databind: Insecure deserialization

CVE-2018-14720 is rated critical with a CVSS v3.0 base score of 9.8 and affects Fasterxml Jackson Databind, along with 11 other products in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

FasterXML jackson-databind 2.x before 2.9.7 might allow attackers to conduct external XML entity (XXE) attacks by leveraging failure to block unspecified JDK classes from polymorphic deserialization.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
Attack complexity: Low. No special conditions; the attack can be repeated reliably.
Privileges required: None. No account or prior access is needed.
User interaction: None. No action from any user is needed.
Scope: Unchanged. Impact stays within the vulnerable component.
Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-502: Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

CWE-611: Improper Restriction of XML External Entity Reference

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Affected products

Fasterxml Jackson Databind: from 2.6.0 before 2.6.7.2; from 2.7.0 before 2.7.9.5; from 2.8.0 before 2.8.11.3; from 2.9.0 before 2.9.7; 2.7.0 rc1; 2.7.0 rc2; 2.7.0 rc3; 2.8.0 rc1; 2.8.0 rc2; 2.9.0 pr1; 2.9.0 pr2; 2.9.0 pr3
Debian Linux: 8.0; 9.0
Oracle Banking Platform: 2.5.0; 2.6.0; 2.6.1; 2.6.2
Oracle Communications Billing And Revenue Management: 7.5; 12.0
Oracle Enterprise Manager For Virtualization: 13.2.2; 13.2.3; 13.3.1
Oracle Financial Services Analytical Applications Infrastructure: 8.0.2; 8.0.3; 8.0.4; 8.0.5; 8.0.6; 8.0.7
Oracle Jdeveloper: 12.1.3.0.0; 12.2.1.3.0
Oracle Primavera Unifier: from 17.1 up to and including 17.12; 16.1; 16.2; 18.8
Oracle Retail Merchandising System: 15.0; 16.0
Oracle Webcenter Portal: 12.2.1.3.0
Red Hat Jboss Enterprise Application Platform: 7.2.0
Red Hat Openshift Container Platform: 3.11