It was found in FreeBSD 8.0, 6.3 and 4.9, and OpenBSD 4.6 that a null pointer dereference in ftpd/popen.c may lead to remote denial of service of the ftpd service.
| Software | From | Fixed in |
|---|---|---|
| openbsd / openbsd | 4.6 | 4.6.x |
| openbsd / openbsd | 4.9 | 4.9.x |
| openbsd / openbsd | 6.3 | 6.3.x |
| openbsd / openbsd | 8.0 | 8.0.x |