1 files changed, 5 insertions, 1 deletions
diff --git a/libexec/tftpd/tftpd.c b/libexec/tftpd/tftpd.c
index f8f9bd549a2e..a3faee86e7d0 100644
--- a/libexec/tftpd/tftpd.c
+++ b/libexec/tftpd/tftpd.c
@@ -351,10 +351,14 @@ main(int argc, char *argv[])
 			tftp_log(LOG_ERR, "chdir: %s", strerror(errno));
 			exit(1);
 		}
-		if (setgroups(1, &nobody->pw_gid) != 0) {
+		if (setgroups(0, NULL) != 0) {
 			tftp_log(LOG_ERR, "setgroups failed");
 			exit(1);
 		}
+		if (setgid(nobody->pw_gid) != 0) {
+			tftp_log(LOG_ERR, "setgid failed");
+			exit(1);
+		}
 		if (setuid(nobody->pw_uid) != 0) {
 			tftp_log(LOG_ERR, "setuid failed");
 			exit(1);