CVE-2017-15708: Apache Synapse

Critical severity, CVSS 9.8. EPSS: 17.9% chance of exploitation in the next 30 days.

In Apache Synapse, by default no authentication is required for Java Remote Method Invocation (RMI). So Apache Synapse 3.0.1 or all previous releases (3.0.0, 2.1.0, 2.0.0, 1.2, 1.1.2, 1.1.1) allows remote code execution attacks that can be performed by injecting specially crafted serialized objects. And the presence of Apache Commons Collections 3.2.1 (commons-collections-3.2.1.jar) or previous versions in Synapse distribution makes this exploitable. To mitigate the issue, we need to limit RMI access to trusted users only. Further upgrading to 3.0.1 version will eliminate the risk of having said Commons Collection version. In Synapse 3.0.1, Commons Collection has been updated to 3.2.2 version.

Affected products

• Apache Synapse: version 1.0 only; version 1.1 only; version 1.1.1 only; version 1.1.2 only; version 1.2 only; version 2.0.0 only; …
• Oracle Financial Services Market Risk Measurement And Management: version 8.0.6 only; version 8.0.8 only
• Oracle PeopleSoft Enterprise PeopleTools: version 8.56 only; version 8.57 only

Published 2017-12-11. Last modified 2026-06-17.