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Summary

A crafted JSON request can be used to perform a DoS attack when using the Struts REST plugin

Who should read this

All Struts 2 developers and users which are using the REST plugin

Impact of vulnerability

A DoS attack is possible when using outdated json-lib with the Struts REST plugin

Maximum security rating

Medium

Recommendation

Upgrade to Struts 2.5.14.1

Affected Software

Struts 2.5 - Struts 2.5.14

Reporter

Huijun Chen, XiaoLong Zhu - Huawei Technologies

CVE Identifier

CVE-2017-15707

Problem

The REST Plugin is using an outdated JSON-lib library which is vulnerable and allow perform a DoS attack using malicious request with specially crafted JSON payload.

Solution

Upgrade to Apache Struts version 2.5.14.1. Another solution is to use the Jackson handler instead of the default JSON-lib handler as described here.

Backward compatibility

No backward incompatibility issues are expected.

Workaround

Use Jackson handler instead of the default JSON-lib handler as described here.

 

 

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