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AUSCERT External Security Bulletin Redistribution
ESB-2017.3093
Multiple vulnerabilities have been identified in Apache Struts 2
4 December 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: Apache Struts 2
Publisher: The Apache Software Foundation
Operating System: UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-15707 CVE-2017-7525
Reference: ESB-2017.2956
ESB-2017.2879
ESB-2017.2846
ESB-2017.1863
Original Bulletin:
https://cwiki.apache.org/confluence/display/WW/S2-054
https://cwiki.apache.org/confluence/display/WW/S2-055
Comment: This bulletin contains two (2) The Apache Software Foundation
security advisories.
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S2-054
Created by Lukasz Lenart, last modified on Dec 01, 2017
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A DoS attack is possible when using outdated json-lib with the Struts REST plugin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The REST Plugin is using an outdated JSON-lib library which is vulnerable and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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S2-055
Created by Lukasz Lenart, last modified on Dec 01, 2017
Summary
Vulnerability in the Jackson JSON library
Who should read this
All Struts 2 developers and users which are using the REST plugin
Impact of vulnerability
Not clear, please read the linked issue for more details.
https://github.com/FasterXML/jackson-databind/issues/1599
Maximum security rating
Medium
Recommendation
Upgrade to Struts 2.5.14.1
Affected Software
Struts 2.5 - Struts 2.5.14
Reporter
David Dillard < david dot dillard at veritas dot com> - Veritas Technologies
Product Security Group
CVE Identifier
Related to CVE-2017-7525
Problem
A vulnerability was detected in the latest Jackson JSON library, which was
reported here. Upgrade com.fasterxml.jackson to version 2.9.2 to address
CVE-2017-7525.
Solution
Upgrade to Apache Struts version 2.5.14.1. Another solution is to manually
upgrade Jackson dependencies in your project to not vulnerable versions, see
this comment.
Backward compatibility
No backward incompatibility issues are expected.
Workaround
Upgrade Jackson JSON library to the latest version.
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