The TFTP daemon must operate in secure mode which provides access only to a single directory on the host file system.

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The TFTP daemon must operate in secure mode which provides access only to a single directory on the host file system.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-847	GEN005080	SV-28419r3_rule	ECSC-1	High

Description
Secure mode limits TFTP requests to a specific directory. If TFTP is not running in secure mode, it may be able to write to any file or directory and may seriously impair system integrity, confidentiality, and availability.

STIG	Date
SOLARIS 10 X86 SECURITY TECHNICAL IMPLEMENTATION GUIDE	2018-12-10

Details

Check Text ( C-28684r3_chk )
Determine if TFTPD is running in secure mode. # grep tftp /etc/inet/inetd.conf OR # svccfg -s tftp/udp6 listprop \|grep in.tftpd \|grep exec If any returned service line does not use the -s parameter to TFTPD, this is a finding. If TFTP is not installed this check is not applicable.

Fix Text (F-25710r3_fix)
Edit /etc/inet/inetd.conf and add the -s parameter to TFTPD. # inetconv OR Update the SMF entry for the TFTP daemon. # svccfg -s tftp/udp6 setprop inetd_start/exec = "astring:\"/usr/sbin/in.tftpd -s \""