some problems found by rkhunter

Application advisories
* Application scan
Checking Apache2 modules ... [ Not found ]
Checking Apache configuration ... [ OK ]

* Application version scan
- Exim MTA 4.42 [ OK ]
- GnuPG 1.2.1 [ Vulnerable ]
- Apache [unknown] [ OK ]
- Bind DNS [unknown] [ OK ]
- OpenSSL 0.9.7a [ Vulnerable ]
- PHP 4.3.8 [ OK ]
- PHP 4.3.8 [ OK ]
- Procmail MTA 3.22 [ OK ]
- OpenSSH 3.5p1 [ Vulnerable ]


Security advisories
* Check: Groups and Accounts
Searching for /etc/passwd... [ Found ]
Checking users with UID '0' (root)... [ OK ]

* Check: SSH
Searching for sshd_config...
Found /etc/ssh/sshd_config
Checking for allowed root login... Watch out Root login possible. Possible risk! Hint: see logfile for more information
info:
Hint: See logfile for more information about this issue
Checking for allowed protocols... [ Warning (SSH v1 allowed) ]

* Check: Events and Logging
Search for syslog configuration... [ OK ]
Checking for running syslog slave... [ OK ]
Checking for logging to remote system... [ OK (no remote logging) ]

---------------------------- Scan results ----------------------------

MD5
MD5 compared: 51
Incorrect MD5 checksums: 0

File scan
Scanned files: 320
Possible infected files: 0

Application scan
Vulnerable applications: 3

Scanning took 561 seconds