[jira] [Resolved] (WW-4818) Default Multipart validation regex is invalid

["Lukasz Lenart (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WW-4818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart resolved WW-4818.
-------------------------------
    Resolution: Fixed

> Default Multipart validation regex is invalid
> ---------------------------------------------
>
>                 Key: WW-4818
>                 URL: https://issues.apache.org/jira/browse/WW-4818
>             Project: Struts 2
>          Issue Type: Bug
>    Affects Versions: 2.5.12
>            Reporter: adam brin
>             Fix For: 2.5.13
>
>
> 2.5.12 introduced a regex matches for multipart requests.  The default regex used, however is significantly too strict based on the RFC, as well as common practice.  Specifically, at minimum, it needs to include the *hyphen* and more likely needs to support all of the fields defined by the RFC (https://www.w3.org/Protocols/rfc1341/7_2_Multipart.html).
> {quote}bcharsnospace := DIGIT / ALPHA / "'" / "(" / ")" / "+" / "_" / "," / "-" / "." / "/" / ":" / "=" / "?"{quote}
> In basic testing, we've seen:
> {code} Content-Type: multipart/form-data; boundary=BRKIypZ3Stvuclu7C-CTbP2fNljGAOVk[\r][\n]{code} (generated by the Apache HttpClient)
> and
> {code}multipart/form-data; boundary=----WebKitFormBoundaryZGDtABnGWGozLAjh{code} (generated by Safari)



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