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Apache Struts allows entering a custom URL in a form field if built-in URLValidator is used

Description

In Apache Struts 2.3.7 through 2.3.33 and 2.5 through 2.5.12, if an application allows entering a URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL. NOTE: this vulnerability exists because of an incomplete fix for S2-047 / CVE-2017-7672.


Affected Software


CPE Name Name Version
org.apache.struts:struts2-core 2.5
org.apache.struts:struts2-core 2.5.1
org.apache.struts:struts2-core 2.5.10
org.apache.struts:struts2-core 2.5.10.1
org.apache.struts:struts2-core 2.5.12
org.apache.struts:struts2-core 2.5.2
org.apache.struts:struts2-core 2.5.5
org.apache.struts:struts2-core 2.5.8

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