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https://issues.apache.org/jira/browse/DIRAPI-464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Emmanuel Lécharny closed DIRAPI-464.
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> Stored-credential bcrypt work factor drives unbounded CPU cost at bind
> ----------------------------------------------------------------------
>
> Key: DIRAPI-464
> URL: https://issues.apache.org/jira/browse/DIRAPI-464
> Project: Directory Client API
> Issue Type: Bug
> Affects Versions: 2.1.8
> Reporter: Emmanuel Lécharny
> Priority: Major
> Fix For: 2.1.9
>
>
> An authenticated low-privilege user sets their own _userPassword_ to
> '_\{CRYPT\}$2a$30$<22-char salt>..._' (a syntactically valid _bcrypt_ hash
> with cost 30), then fires 16 concurrent binds to their own *DN* with garbage
> passwords; each forces the authenticator through 2^30-round _bcrypt_, pinning
> 16 cores for hours and starving all directory operations.
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