file again when it needs it. This is called from nmap_free_mem, because
cp_free (also called by nmap_free_mem) invalidates members of the
services data structures.
In normal use this doesn't matter. It only matters when reinvoking the
engine several times with --interactive.
entries:
o [NSE] Raw packet sending at the IP layer is now supported, in addition to
the Ethernet sending functionality. Packets to send start with an IPv4
header and can be sent to arbitrary hosts. [Kris]
o [NSE] Added the ipidseq script to classify a host's IP ID sequence numbers
in the same way Nmap does. This can be used to test hosts' suitability for
Nmap's Idle Scan (-sI), i.e. check if a host is an idle zombie. This is
the first script to use the new raw IP sending functionality in NSE. [Kris]
o [NSE] Added the function nmap.is_privileged() to tell a script if, as far
as Nmap's concerned, it can do privileged operations. For instance, this
can be used to see if a script should be able to open a raw socket or
Ethernet interface. [Kris]
o [NSE] Added the function nmap.get_ports() to allow a script to iterate
over a host's port tables matching a certain protocol and state. [Kris,
Patrick]
and broadcast lists when a connection is broken, instead of re-reading
the descriptor from the fdinfo struct. The problem was that there were
two calls to rm_fd, and the first one invalidated the data that the
struct pointer pointed to.
For some reason this didn't cause any problems in most situations. Mak
Kolybabi reported that it caused a segfault in
ncat -l --ssl -k -v 5061 > /dev/null < /dev/zero
With SSL, new connections would try to read memory that was previously
freed, as descriptors were not being removed from the broadcast list as
they were removed from the read list.
You can see the error in these debug logs:
NCAT DEBUG: Closing connection.
NCAT DEBUG: Swapping fd[2] (4) with fd[3] (5)
NCAT DEBUG: Removed fd 4 from list, nfds 3, maxfd 5
NCAT DEBUG: Swapping fd[1] (5) with fd[1] (5)
NCAT DEBUG: Removed fd 5 from list, nfds 1, maxfd 4
The "Remove fd X" should have the same X in both lines.
recommendation from Daniel Roethlisberger. TRACE is interesting because
it can be used to get cookies or authentication data in a cross-site
scripting attack. See http://www.owasp.org/index.php/Cross_Site_Tracing.
methods it discovers are in (GET, HEAD, POST, OPTIONS, TRACE). In
verbose mode, or if any other method is discovered, it prints all
methods (and optionally retests them). See
http://seclists.org/nmap-dev/2010/q1/401.
buildGet/buildRequest with a one-step build_request. Provide a new
function generic_request that can do a request for any given method
(get, head, and post are now defined in terms of this function).
options table, in http functions. It was unreasonable that this
yet-unused feature was given a more prominent place than even the header
and request body, both of which are in the options table.
This change doesn't affect any other scripts or libraries because none
of them use cookies. In the cases, like http.get, where cookies was an
optional final parameter, I just removed it. Where it was not the final
parameter, as in http.post and http.pGet, I left the parameter in place
but documented that it is ignored for backwards compatibility.
make use of it. Added 5 scripts that use the new libraries:
- snmp-netstat shows listening and connected sockets
- snmp-processes shows process information including name, pid, path and
parameters
- snmp-win32-services shows the names of running Windows services
- snmp-win32-shares shows the names and path of Windows shares
- snmp-win32-software shows a list of installed Windows software
- snmp-win32-users shows a list of local Windows users
checked that the internal buffer was not empty before a send; I changed
it to have an effect only when at least one byte has been written
already.
Formerly, zero-byte sends such as socket:send("") in NSE would crash
Nmap, for both UDP and TCP. I tested this change on Linux, and for UDP
it sends a zero-byte datagram, and for TCP it sends nothing at all.
o Removed the nmap_service.exe helper program for smb-psexec, as it
was still being flagged by malware detection even after the
bit-flipping in the next release. You can now download it from
http://nmap.org/psexec/nmap_service.exe. (The script will remind you
if it's not installed.)
