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authorEric Andersen2003-07-30 06:56:07 +0000
committerEric Andersen2003-07-30 06:56:07 +0000
commitd8ceba959a9e8c6a62b20080bb745776e1644fb8 (patch)
tree2c03f03a698192213664f0d3998ab9591133c69a
parenteef2317b9f5bdd362a7b8a0169c688245374f0f5 (diff)
downloadbusybox-d8ceba959a9e8c6a62b20080bb745776e1644fb8.zip
busybox-d8ceba959a9e8c6a62b20080bb745776e1644fb8.tar.gz
Ronny L Nilsson writes:
The login process should always timeout if user don't login sucessfully within reasonable time. Otherwise we're sensetive to a DOS attack by simply doing a bunch of simultaneous telnet connections (deploys all availible TTY's). This patch make login.c terminate the connection after "TIMEOUT" seconds.
-rw-r--r--loginutils/login.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/loginutils/login.c b/loginutils/login.c
index 741d15c..c2bada2 100644
--- a/loginutils/login.c
+++ b/loginutils/login.c
@@ -86,12 +86,9 @@ extern int login_main(int argc, char **argv)
username[0]=0;
amroot = ( getuid ( ) == 0 );
signal ( SIGALRM, alarm_handler );
+ alarm ( TIMEOUT );
+ alarmstarted = 1;
- if (( argc > 1 ) && ( TIMEOUT > 0 )) {
- alarm ( TIMEOUT );
- alarmstarted = 1;
- }
-
while (( flag = getopt(argc, argv, "f:h:p")) != EOF ) {
switch ( flag ) {
case 'p':