Nmap 3.75 Released: less crashes and more OS fingerprints

[Fyodor <fyodor () insecure org>]

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Nmap hackers,

I am pleased to release Nmap 3.75, which contains dozens of
improvements over 3.70.  One of the most important is a huge OS
fingerprint database -- I finally got off my duff and integrated the
latest submissions you guys have contributed.  We're talking OpenBSD
3.6, WinXP SP2, Windows Longhorn warez, and hundreds more.

I also fixed several errors that could cause the Windows version to
crash, as well as some cross-platform issues.  A new --max_scan_delay
parameter is available for optimizing scn time.  -T4 and -T5 are
faster now as well.  Here are the CHANGELOG details:

o Implemented a huge OS fingerprint database update.  The number of
  signatures have increased more than 20% to 1,353 and many of the
  existing ones are much improved.  Notable updates include the fourth
  edition of Bell Lab's Plan9, Grandstream's BugeTone 101 IP Phone,
  and Bart's Network Boot Disk 2.7 (which runs MS-DOS).  Oh, and Linux
  kernels up to 2.6.8, dozens of new Windows fingerprints including XP
  SP2, the latest Longhorn warez, and many modified Xboxes, OpenBSD
  3.6, NetBSD up to 2.0RC4, Apple's AirPort Express WAP and OS X 10.3.3
  (Panther) release, Novell Netware 6.5, FreeBSD 5.3-BETA, a bunch of
  Linksys and D-Link consumer junk, the latest Cisco IOS 12.2
  releases, a ton of miscellaneous broadband routers and printers, and
  much more.

o Updated nmap-mac-prefixes with the latest OUIs from the IEEE.
  [ http://standards.ieee.org/regauth/oui/oui.txt ]

o Updated nmap-protocols with the latest IP protocols from IANA 
  [ http://www.iana.org/assignments/protocol-numbers ]

o Added a few new Nmap version detection signatures thanks to a patch
  from Martin MaÚok (martin.macok(a)underground.cz).

o Fixed a crash problem in the Windows version of Nmap, thanks to a
  patch from Ganga Bhavani GBhavani(a)everdreamcorp.com).

o Fixed Windows service scan crashes that occur with the error message
  "Unexpected nsock_loop error. Error code 10022 (Unknown error)".  It
  turns out that Windows does not allow select() calls with all three
  FD sets empty.  Lame.  The Linux select() man page even suggests
  calling "select with all three sets empty, n zero, and a non-null
  timeout as a fairly portable way to sleep with subsecond precision."
  Thanks to Gisle Vanem (giva(a)bgnett.no) for debugging help.

o Added --max_scan_delay parameter.  Nmap will sometimes increase the
  delay itself when it detects many dropped packets.  For example,
  Solaris systems tend to respond with only one ICMP port unreachable
  packet per second during a UDP scan.  So Nmap will try to detect
  this and lower its rate of UDP probes to one per second.  This can
  provide more accurate results while reducing network congestion, but
  it can slow the scans down substantially.  By default (with no -T
  options specified), Nmap allows this delay to grow to one second per
  probe.  This option allows you to set a lower or higher maximum.
  The -T4 and -T5 scan modes now limit the maximum scan delay for TCP
  scans to 10 and 5 ms, respectively.

o Fixed a bug that prevented RPC scan (-sR) from working for UDP ports
  unless service detection (-sV) was used.  -sV is still usually a
  better approach than -sR, as the latter ONLY handles RPC.  Thanks to
  Stephen Bishop (sbishop(a)idsec.co.uk) for reporting the problem and
  sending a patch.

o Fixed nmap_fetchfile() to better find custom versions of data files
  such as nmap-services.  Note that the implicitly read directory
  should be ~/.nmap rather than ~/nmap .  So you may have to move any
  customized files you now have in ~/nmap .  Thanks to nnposter
  (nnposter(a)users.sourceforge.net) for reporting the problem and
  sending a patch.

o Changed XML output so that the MAC address [address] element comes
  right after the IPv4/IPv6 [address] element.  Apparently this is
  needed to comply with the DTD (
  http://www.insecure.org/nmap/data/nmap.dtd ).  Thanks to Adam Morgan
  (adam.morgan(a)Q1Labs.com) and Florian Ebner
  (Florian.Ebner(a)e-bros.de) for the problem reports.

o Fixed an error in the Nmap RPM spec file reported by Pascal Trouvin
  (pascal.trouvin(a)wanadoo.fr)

o Fixed a timing problem in which a specified large --send_delay would
  sometimes be reduced to 1 second during a scan.  Thanks to Martin
  MaÚok (martin.macok(a)underground.cz) for reporting the problem.

o Fixed a timing problem with sneaky and paranoid modes (-T1 and -T0)
  which would cause Nmap to continually scan the same port and never
  hit other ports when scanning certain firewalled hosts.  Thanks to
  Curtis Doty (Curtis(a)GreenKey.net) for reporting the problem.

o Fixed a bug in the build system that caused most Nmap subdirectories
  to be configured twice.  Changing the variable holding the name of
  subdirs from $subdirs to $nmap_cfg_subdirs resolved the problem --
  configure must have been using that variable name for its own internal
  operations.  Anyway, this should reduce compile time significantly.

o Made a trivial change to nsock/src/nsock_event.c to work around a "a
  bug in GCC 3.3.1 on FreeBSD/sparc64".  I found the patch by digging
  around the FreeBSD ports tree repository.  It would be nice if the
  FreeBSD Nmap port maintainers would report such things to me, rather
  than fixing it in their own Nmap tree and then applying the patch to
  every future version.  On the other hand, they deserve some sort of
  "most up-to-date" award.  I stuck Nmap 3.71-PRE1 in the dist
  directory for a few people to test, and made no announcement or
  direct link.  The FreeBSD crew found it and upgraded anyway :).  The
  gcc-workaround patch was apparently submitted to the FreeBSD folks
  by Marius Strobl (marius(a)alchemy.franken.de).

o Fixed (I hope) an OS detection timing issue which would in some
  cases lead to the warning that "insufficient responses for TCP
  sequencing (3), OS detection may be less accurate."  Thanks to Adam
  Kerrison (adam(a)tideway.com) for reporting the problem.

o Modified the warning given when files such as nmap-services exist in
  both the compiled in NMAPDATADIR and the current working directory.
  That message should now only appear once and is more clear.

o Fixed ping scan subsystem to work a little bit better when
  --scan_delay (or some of the slower -T templates which include a scan
  delay) is specified.  Thanks to Shahid Khan (khan(a)asia.apple.com)
  for suggestions.

o Taught connect() scan to properly interpret ICMP protocol
  unreachable messages.  Thanks to Alan Bishoff
  (abishoff(a)arc.nasa.gov) for the report.

o Improved the nmapfe.desktop file to better comply with standards.
  Thanks to Stephane Loeuillet (stephane.loeuillet(a)tiscali.fr) for
  sending the patch.

As usual, 3.75 is available from
http://www.insecure.org/nmap/nmap_download.html, including Windows
(.zip format) binaries.

For the more paranoid (smart) members of the list, here are the md5
hashes: 

49751e0caf24a0aa631669d931d5262b  nmap-3.75-1.i386.rpm
d81cf343d49a66fbaf89aa3b58855ec8  nmap-3.75-1.src.rpm
1b54c0608b36f6b3ac92d7d1b910738f  nmap-3.75.tar.bz2
fa537ab4ed0f4ee7550cffb15295312f  nmap-3.75.tgz
8b5769e3a522c309fec2855d52579685  nmap-3.75-win32.zip
af7cf28bdef8948cb3084f29d644537d  nmap-frontend-3.75-1.i386.rpm

These release notes should be signed with my PGP key, which is
available at http://www.insecure.org/fyodor_gpgkey.txt . The key
fingerprint is: 97 2F 93 AB 9C B0 09 80 D9 51 40 6B B9 BC E1 7E

Enjoy! And please let me know if you find any problems.

Cheers,
Fyodor 
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