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Posted to server-dev@james.apache.org by "Antoine Duprat (JIRA)" <se...@james.apache.org> on 2017/11/30 16:31:00 UTC
[jira] [Resolved] (JAMES-2243) Encode special characters in LDAP
search filter to prevent injections
[ https://issues.apache.org/jira/browse/JAMES-2243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Antoine Duprat resolved JAMES-2243.
-----------------------------------
Resolution: Fixed
merged
> Encode special characters in LDAP search filter to prevent injections
> ---------------------------------------------------------------------
>
> Key: JAMES-2243
> URL: https://issues.apache.org/jira/browse/JAMES-2243
> Project: James Server
> Issue Type: Bug
> Components: data, ldap
> Affects Versions: master
> Reporter: Thibaut SAUTEREAU
> Labels: security
>
> The user-controlled "name" input is not sanitized when making LDAP searches with searchAndBuildUser. This could lead to LDAP injections using special characters.
> Possible scenario: an attacker can bruteforce password authentication without needing to target a specific user of test every user. For instance, instead of needing to test 1 M passwords on adupont@linagora.com and then on amartin@linagora.com, he can test on a*. Then if a password matches, he can quickly get to the user by dichotomy (aa*, ab*, aba*, abb*, etc.).
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