Potential mitigation for WW-5466 #1068
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- Fix for boundary condition bug in JakartaMultipartRequest that results in a NPE when struts.multipart.maxStringLength is not explicitly set, and normal fields are processed along with a file upload. - Additional unit tests for file upload interceptors to confirm functionality with-or-without max parameters being set when a file upload is processed alone as well as with normal fields.
lukaszlenart
approved these changes
Oct 7, 2024
| @@ -142,7 +142,7 @@ protected void processNormalFormField(FileItem item, String charset) throws Unsu | |||
| } | |||
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| long size = item.getSize(); | |||
| if (size > maxStringLength) { | |||
| if (maxStringLength != null && size > maxStringLength) { | |||
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Hello Apache Struts Team.
This is a proposed mitigation for WW-5466. It is unlikely that many users will encounter it given the default configuration normally sets
struts.multipart.maxStringLength.The proposed change is a basic guard, combined with some additional unit tests to confirm that processing works both when the configuration values have not been set, as well as when they have been set.
Please advise if anyone thinks the change should be considered, or needs additional consideration.