[Bug 54702] New: ldp.exe crashes when attempting to add an entry without a name

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54702

Bug ID: 54702
           Summary: ldp.exe crashes when attempting to add an entry
                    without a name
           Product: Wine
           Version: 8.4
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: wldap32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 74210
  --> https://bugs.winehq.org/attachment.cgi?id=74210
WINEDEBUG=+wldap32

ldp.exe is Microsoft's GUI LDAP client, which was part of the Windows XP
Service Pack 2 Support Tools and is still available on Windows 10 by installing
the Windows feature "Active Directory Lightweight Directory Services".

Steps to reproduce:

1. Create a 32-bit Wine bottle and set the Windows version to XP.

2. Run `winetricks mfc42`.

3. Run `wine WindowsXP-KB838079-SupportTools-ENU.exe`.

4. Run `docker run --detach -p1389:1389 bitnami/openldap`

5. Run `wine 'C:\Program Files\Support Tools\ldp.exe'`.

6. Click Connection > Connect, enter "localhost" for "Server" and "1389" for
"Port", check "Bind with default credentials", and click OK.

7. Click Browse > Add, leave everything blank, and click Run.

At this point, ldp.exe crashes. However, the program does not crash if you
enter some Distinguished Name (DN) in the Add dialog, whether the DN is valid
or not.

$ sha256sum WindowsXP-KB838079-SupportTools-ENU.exe
7927e87af616d2fb8d4ead0db0103eb845a4e6651b20a5bffea9eebc3035c24d