Quantum Secular Labs / Blog / Advisories

CVE-2018-17200: Apache Ofbiz: Insecure deserialization

CVE-2018-17200 is rated critical with a CVSS v3.1 base score of 9.8 and affects Apache Ofbiz. 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

The Apache OFBiz HTTP engine (org.apache.ofbiz.service.engine.HttpEngine.java) handles requests for HTTP services via the /webtools/control/httpService endpoint. This service takes the `serviceContent` parameter in the request and deserializes it using XStream. This `XStream` instance is slightly guarded by disabling the creation of `ProcessBuilder`. However, this can be easily bypassed (and in multiple ways). Mitigation: Upgrade to 16.11.06 or manually apply the following commits on branch 16 r1850017+1850019

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/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.

Affected products

  • Apache Ofbiz: from 16.11.01 up to and including 16.11.05

References