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https://issues.apache.org/jira/browse/DIRAPI-442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18120633#comment-18120633
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Emmanuel Lécharny commented on DIRAPI-442:
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Found by Claude
> Unbounded DSML filter nesting causes StackOverflowError during parse
> --------------------------------------------------------------------
>
> Key: DIRAPI-442
> URL: https://issues.apache.org/jira/browse/DIRAPI-442
> Project: Directory Client API
> Issue Type: Bug
> Affects Versions: 2.1.8
> Reporter: Emmanuel Lécharny
> Priority: Major
> Fix For: 2.1.9
>
>
> An attacker sends a *DSML* batchRequest whose _searchRequest_ filter is
> *100,000* nested *<not>* elements; during _Dsmlv2Parser.getNextRequest()_ the
> recursive transform overflows the stack, the response is truncated, and
> repeated requests degrade or wedge the gateway's thread pool.
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