Package: atftpd Version: 0.7.git20120829-1 Severity: normal Tags: lfs Dear Maintainer,
Attempting to transfer a binary file with a length of 47462048 bytes causes atftpd to send an ICMP port unreachable to the client. The server is run out of inetd: tftp-server$ head -1 /etc/default/atftpd USE_INETD=true tftp-server$ grep tftp /etc/inetd.conf tftp dgram udp4 wait nobody /usr/sbin/tcpd /usr/sbin/in.tftpd --tftpd-timeout 300 --retry-timeout 5 --maxthread 100 --verbose=5 /tftpboot We have attempted to transfer a binary file from a Cisco router to atftpd via a directly-connected network segment. A tcpdump on the segment monitoring the transfer shows a port unreachable sent from the server (192.168.253.21): 15:19:59.411461 IP 192.168.253.21.44863 > 192.168.253.3.53337: UDP, length 4 15:19:59.412806 IP 192.168.253.3.53337 > 192.168.253.21.44863: UDP, length 516 15:19:59.412899 IP 192.168.253.21.44863 > 192.168.253.3.53337: UDP, length 4 15:19:59.414381 IP 192.168.253.3.53337 > 192.168.253.21.44863: UDP, length 516 15:19:59.414624 IP 192.168.253.21.44863 > 192.168.253.3.53337: UDP, length 37 15:19:59.417361 IP 192.168.253.3.53337 > 192.168.253.21.44863: UDP, length 4 15:19:59.417448 IP 192.168.253.21 > 192.168.253.3: ICMP 192.168.253.21 udp port 44863 unreachable, length 40 15:20:02.414195 IP 192.168.253.3.53337 > 192.168.253.21.44863: UDP, length 4 15:20:02.414269 IP 192.168.253.21 > 192.168.253.3: ICMP 192.168.253.21 udp port 44863 unreachable, length 40 15:20:06.413873 IP 192.168.253.3.53337 > 192.168.253.21.44863: UDP, length 4 15:20:06.413949 IP 192.168.253.21 > 192.168.253.3: ICMP 192.168.253.21 udp port 44863 unreachable, length 40 15:20:11.413464 IP 192.168.253.3.53337 > 192.168.253.21.44863: UDP, length 4 15:20:11.413537 IP 192.168.253.21 > 192.168.253.3: ICMP 192.168.253.21 udp port 44863 unreachable, length 40 15:20:17.412970 IP 192.168.253.3.53337 > 192.168.253.21.44863: UDP, length 4 15:20:17.413037 IP 192.168.253.21 > 192.168.253.3: ICMP 192.168.253.21 udp port 44863 unreachable, length 40 The following log entries were written to /var/log/daemon.log Dec 21 15:18:00 tftp-server in.tftpd[16688]: connect from 192.168.253.3 (192.168.253.3) Dec 21 15:18:00 tftp-server atftpd[16688]: Advanced Trivial FTP server started (0.7) Dec 21 15:18:00 tftp-server atftpd[16688]: Fetching from 192.168.253.3 to c1841-adventerprisek9-mz.151-4.M9.bin Dec 21 15:19:59 tftp-server atftpd[16688]: tftpd_file.c: 361: error writing to file /tftpboot/c1841-adventerprisek9-mz.151-4.M9.bin Dec 21 15:23:00 tftp-server atftpd[16688]: atftpd terminating after 300 seconds Dec 21 15:23:00 tftp-server atftpd[16688]: Main thread exiting The end result was 33553920 bytes were transfered before the transfer failed: tftp-server$ ls -l /tftpboot/c1841-adventerprisek9-mz.151-4.M9.bin -rw-r--r-- 1 nobody nogroup 33553920 Dec 21 15:19 /tftpboot/c1841-adventerprisek9-mz.151-4.M9.bin -- System Information: Distributor ID: Raspbian Description: Raspbian GNU/Linux 8.0 (jessie) Release: 8.0 Codename: jessie Architecture: armv7l Kernel: Linux 4.4.34-v7+ (SMP w/4 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages atftpd depends on: ii debconf [debconf-2.0] 1.5.56 ii libc6 2.19-18+deb8u6 ii libpcre3 2:8.35-3.3+deb8u4 ii libwrap0 7.6.q-25 ii lsb-base 4.1+Debian13+rpi1+nmu1 ii update-inetd 4.43 Versions of packages atftpd recommends: ii openbsd-inetd [inet-superserver] 0.20140418-2 Versions of packages atftpd suggests: ii logrotate 3.8.7-1 -- debconf information: atftpd/tsize: true atftpd/tftpd-timeout: 300 atftpd/timeout: true atftpd/basedir: /tftpboot atftpd/port: 69 atftpd/blksize: true atftpd/maxthread: 100 atftpd/verbosity: 5 (LOG_NOTICE) atftpd/logtofile: false atftpd/retry-timeout: 5 atftpd/ttl: 1 atftpd/logfile: /var/log/atftpd.log atftpd/mcast_addr: 239.239.239.0-255 atftpd/multicast: true atftpd/use_inetd: true atftpd/mcast_port: 1758
