https://issues.apache.org/bugzilla/show_bug.cgi?id=52865

             Bug #: 52865
           Summary: Crash by segmentation fault in mod_authn_core in
                    Apache-2.4.1
           Product: Apache httpd-2
           Version: 2.4.1
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_authn_core
        AssignedTo: [email protected]
        ReportedBy: [email protected]
    Classification: Unclassified


To replay it, set the following configuration entries in the httpd.conf:

LoadModule authn_core_module modules/mod_authn_core.so
<AuthnProviderAlias file file1>
AuthName "dfdf"
</AuthnProviderAlias>

Start server and you will see the segmentation fault.

I don't quite understand the problem. 

I put some printf() in the invoke_cmd() function. It seems that the segfault
occurs when it's executing the AuthName directive. The code reaches “return
cmd->AP_TAKE1(parms, mconfig, w);” but does not reach the handler function of
the AuthName directive -- set_authname().

Please check it. 

Thanks a lot!!!

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