[TYPO3-linux] Backend Login with RSA after server changes

[Daniel Wallner]

Hello,

I recently made a few server changes concerning and PHP-xml updates - unfortunately I can't really put my finger on what I exactly did.

After the changes we have not been able to log into the backend again. Only if we configure $TYPO3_CONF_VARS['BE']['loginSecurityLevel'] to be "normal" in the install tool.

If I try to login with the settings switch to "rsa", I get an error, that my password is wrong.

I cannot find any error logs referencing this problem in the php logs nor in the admin logs in the typo3 backend.

I already traced the network connection with the "rsa" setting. The browser makes a javascript request which does not fail and then sands a hash to the server in the HTTP header. I guess that procedure is working.

I guessed that it could be a malfunctioning OpenSSL configuration, but the install tool says: "PHP OpenSSL extension installed properly".

The server is runs on CentOS 6.5 with SELinux in the Microsoft Azure cloud. PHP Version is 5.5.20.
The apache server runs in the version: 2.2.22.

Has anybody an idea, what could be wrong?

Thanks in advance for your help.