1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200801-17 / netkit-ftpd |
| Release Date | January 29, 2008 |
| Latest Revision | January 29, 2008: 01 |
| Impact | normal |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| net-ftp/netkit-ftpd | < 0.17-r7 | >= 0.17-r7 | All supported architectures |
Related bugreports: #199206
Netkit FTP Server contains a Denial of Service vulnerability.
net-ftp/netkit-ftpd is the Linux Netkit FTP server with optional SSL support.
Venustech AD-LAB discovered that an FTP client connected to a vulnerable server with passive mode and SSL support can trigger an fclose() function call on an uninitialized stream in ftpd.c.
A remote attacker can send specially crafted FTP data to a server with passive mode and SSL support, causing the ftpd daemon to crash.
Disable passive mode or SSL.
All Netkit FTP Server users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=net-ftp/netkit-ftpd-0.17-r7" |