Description of problem:
vsftpd segfaults when a client attempts to enter passive mode using encryption.

Version-Release number of selected component (if applicable):
vsftpd-2.2.0-6.fc12.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Configure vsftpd as below. Note that the SELinux policy workaround in bug 537428 must be applied, otherwise an SELinux denial stops things before this point.
2. Attempt to log in using Filezilla
3.
  
Actual results:
vsftpd[14285]: segfault at 0 ip 00007f97a2f039a6 sp 00007fff0c8ed1c0 error 4 in vsftpd[7f97a2eeb000+25000]

Expected results:
No segfault

Additional info:
Below are are the changes I've made to the default config. I'm not sure how to get vsftpd to not daemonize so that I can attach gdb or generate a core file..

15c15
< local_enable=YES
---
> #local_enable=YES
27c27
< #anon_upload_enable=YES
---
> anon_upload_enable=YES
55c55
< xferlog_std_format=YES
---
> #xferlog_std_format=YES
84c84
< #ftpd_banner=Welcome to blah FTP service.
---
> ftpd_banner=Welcome to Rob's FTP service.
95d94
< #chroot_local_user=YES
118a118,131
> listen_port=2121
> pasv_min_port=2122
> pasv_max_port=2199
> max_per_ip=2
> pasv_address=(censored)
> ssl_enable=YES
> rsa_cert_file=/etc/pki/tls/certs/vsftpd.pem
> allow_anon_ssl=YES
> force_anon_logins_ssl=YES
> force_anon_data_ssl=YES
> anon_world_readable_only=YES
> log_ftp_protocol=YES
> secure_email_list_enable=YES
> anon_max_rate=70000