[jira] [Commented] (DIRAPI-400) Hang in LDAP URL parser

["Emmanuel Lécharny (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DIRAPI-400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17849829#comment-17849829 ] 

Emmanuel Lécharny commented on DIRAPI-400:
------------------------------------------

The LDAP URUl you use is perfectly valid, why would you expect it to throw a {{LdapURLEncodingException}}?

> Hang in LDAP URL parser
> -----------------------
>
>                 Key: DIRAPI-400
>                 URL: https://issues.apache.org/jira/browse/DIRAPI-400
>             Project: Directory Client API
>          Issue Type: Bug
>    Affects Versions: 2.1.6
>            Reporter: Andrey Slepykh
>            Priority: Major
>         Attachments: Reproducer.java
>
>
> Hello, we have found a problem in LDAP URL parser in version 2.1.6 while fuzzing. The problem is that LDAP parser can not properly handle specially crafted inputs and just hangs.
> {{Steps to reproduce:}}
> ~1. Download Apache Directory LDAP API v2.1.6:~
> ^wget wget [https://github.com/apache/directory-ldap-api/archive/refs/tags/2.1.6.tar.gz]^
> ^tar xf 2.1.6.tar.gz && rm 2.1.6.tar.gz^
> {{2. Compile the project (we used jdk-11 and mvn-3.9.6):}}
> {{^cd directory-ldap-api-2.1.6^}}
> {{^mvn clean package^}}
> {{3. Get the reproducer:}}
> {{^mkdir fuzz && cd fuzz^}}
> {{^mv <path/to/reproducer>/Reproducer.java .^}}
> {{4. Compile the reproducer:}}
> {{^javac -cp ../ldap/model/target/classes/ ./Reproducer.java^}}
> {{5. Reproduce the hang:}}
> {{^java -cp ../ldap/model/target/classes/:.:../util/target/classes/:../integ-osgi/target/dependency/slf4j-api-1.7.26.jar:../i18n/target/classes/ Reproducer^}}
> We decided to fuzz this function, because it is used in Apache Directory Server
> Found by Linux Verification Center (portal.linuxtesting.ru) with Jazzer.
> Author L.Reviakin (L.reviakin@fobos-nt.ru)



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