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udp port 0 fix from Kris

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fyodor 2007-05-19 23:33:15 +00:00
parent f8c610490a
commit 0cf10273e2
2 changed files with 17 additions and 1 deletions
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5
CHANGELOG
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@ -1,5 +1,10 @@
# Nmap Changelog ($Id$); -*-text-*-
o Fixed a bug which caused port 0 to be improperly used for gen1 OS
detection in some cases when your scan includes port 0 (it isn't
included by default). Thanks to Sebastian Wolfgarten for the report
and Kris Katterjohn for the fix.
o Updated nmap-mac-prefixes to latest IEEE data as of 5/18/07. Also
removed some high (greater than 0x80) characters from some company
names because they were causing this error on Windows when Nmap is

13
osscan.cc
View file

@ -575,10 +575,21 @@ static FingerPrint *get_fingerprint(Target *target, struct seq_info *si) {
/* Now we should find a closed port */
if ((tport = target->ports.nextPort(NULL, IPPROTO_TCP, PORT_CLOSED))) {
closedport = tport->portno;
target->FPR1->osscan_closedtcpport = tport->portno;
/* Port 0 seems to screw things up, so try to get another if available */
if (tport->portno == 0)
if ((tport = target->ports.nextPort(tport, IPPROTO_TCP, PORT_CLOSED)))
closedport = tport->portno;
target->FPR1->osscan_closedtcpport = closedport;
} else if ((tport = target->ports.nextPort(NULL, IPPROTO_TCP, PORT_UNFILTERED))) {
/* Well, we will settle for unfiltered */
closedport = tport->portno;
/* Port 0 seems to screw things up, so try to get another if available */
if (tport->portno == 0)
if ((tport = target->ports.nextPort(tport, IPPROTO_TCP, PORT_CLOSED)))
closedport = tport->portno;
} else {
closedport = (get_random_uint() % 14781) + 30000;
}