Nmap Announce mailing list archives
Nmap 4.85BETA6 now avail w/Conficker detection
From: Fyodor <fyodor () insecure org>
Date: Tue, 31 Mar 2009 17:04:29 -0700
Hi Folks! In case you missed all the news reports yesterday, a couple great researchers from the Honeynet Project (Tillmann Werner and Felix Leder) and Dan Kaminsky came up with a way to remotely detect the Conficker worm which has infected millions of machines worldwide. Some say 15,000,000 machines infected, but that might just be exaggerated AV-company BS for all I know. But there are clearly millions of infections, and this massive botnet is scheduled for a new update cycle starting tomorrow. Will this cause Internet doom? No, but the bad guys might fix the mechanism that lets us remotely detect 'em. Or they might engage in other mischief with their botnet. That's why we did the emergency releases--so you can scan for and remove them early! During the process, I had to infect one of my systems with Conficker for testing, and Nmap even got booted from Dreamhost's "unlimited bandwidth" hosting because the downloads were taking too much bandwidth. They said: "Sadly your file nmap-4.85BETA5-setup.exe, and a few similar, were getting so many downloads on your machine, iceman, that it saturated out the 100mbit connection on it, and cause everyone else's sites to go down." Dreamhost blocked further downloads, but we quickly switched to using our colocation provider and also got some mirroring help from Brandon Enright at UCSD! So UCSD is hosting 4.85BETA6. Of course I'd like to thank Ron Bowes who wrote the detection code (it is an update to his existing smb-check-vulns SMB script). David Fifield was a huge help too. An example Conficker scan command is: nmap -PN -T4 -p139,445 -n -v --script=smb-check-vulns --script-args safe=1 [targetnets] A clean machine should report at the bottom: "Conficker: Likely Clean", while likely infected machines report "Conflicker: Likely INFECTED". For more details and updates, see our announcement here: http://insecure.org/ And of course to download Nmap 4.85BETA6, see: http://nmap.org/download.html Of course we have some other nice improvements besides Conficker detection. Here are the changes since BETA4: Nmap 4.85BETA6 [2009-03-31] o Fixed some bugs with the Conficker detection script (smb-check-vulns) [Ron]: o SMB response timeout raised to 20s from 5s to compensate for slow/overloaded systems and networks. o MSRPC now only signs messages if OpenSSL is available (avoids an error). o Better error checking for MS08-067 patch o Fixed forgotten endian-modifier (caused problems on big-endian systems such as Solaris on SPARC). o Host status messages (up/down) are now uniform between ping scanning and port scanning and include more information. They used to vary slightly, but now all look like Host is up (Xs latency). Host is down. The new latency information is Nmap's estimate of the round trip time. In addition, the reason for a host being up is now printed for port scans just as for ping scans, with the --reason option. [David] o Version detection now has a generic match line for SSLv3 servers, which matches more servers than the already-existing set of specific match lines. The match line found 13% more SSL servers in a test. Note that Nmap will not be able to do SSL scan-through against a small fraction of these servers, those that are SSLv3-only or TLSv1-only, because that ability is not yet built into Nsock. There is also a new version detection probe that works against SSLv2-only servers. These have shown themselves to be very rare, so that probe is not sent by default. Kristof Boeynaems provided the patch and did the testing. o [Zenmap] A typo that led to a crash if the ndiff subprocess terminated with an error was fixed. [David] The message was File "zenmapGUI\DiffCompare.pyo", line 331, in check_ndiff_process UnboundLocalError: local variable 'error_test' referenced before assignment o [Zenmap] A crash was fixed: File "zenmapGUI\SearchGUI.pyo", line 582, in operator_changed KeyError: "Syst\xc3\xa8me d'Exploitation" The text could be different, because the error was caused by translating a string that was also being used as an index into an internal data structure. The string will be untranslated until that part of the code can be rewritten. [David] o [Zenmap] A bug was fixed that caused a crash when doing a keyword: or target: search over hosts that had a MAC address. [David] The crash output was File "zenmapCore\SearchResult.pyo", line 86, in match_keyword File "zenmapCore\SearchResult.pyo", line 183, in match_target TypeError: argument of type 'NoneType' is not iterable o Fixed a bug which prevented all comma-separated --script arguments from being shown in Nmap normal and XML output files where they show the original Nmap command. [David] o Fixed ping scanner's runtime statistics system so that instead of saying "0 undergoing Ping Scan" it gives the actual number of hosts in the group (e.g. 4096). [David] o [Zenmap] A crash was fixed in displaying the "Error creating the per-user configuration directory" dialog: File "zenmap", line 104, in File "zenmapGUI\App.pyo", line 129, in run UnicodeDecodeError: 'utf8' codec can't decode bytes in position 43-45: invalid data The crash would only happen to users with paths containing multibyte characters in a non-UTF-8 locale, who also had some error preventing the creation of the directory. [David] Nmap 4.85BETA5 [2009-03-30] o Ron (in just a few hours of furious coding) added remote detection of the Conficker worm to smb-check-vulns. It is based on new research by Tillmann Werner and Felix Leder. You can scan your network for Conficker with a command like: nmap -PN -T4 -p139,445 -n -v --script=smb-check-vulns --script-args safe=1 [targetnetworks] o Ndiff now includes service (version detection) and OS detection differences. [David] o [Ncat] The --exec and --sh-exec options now work in UDP mode like they do in TCP mode: the server handles multiple concurrent clients and doesn't have to be restarted after each one. Marius Sturm provided the patch. o [Ncat] The -v option (used alone) no longer floods the screen with debugging messages. With just -v, we now only print the most important status messages such as "Connected to ...", a startup banner, and error messages. At -vv, minor debugging messages are enabled, such as what command is being executed by --sh-exec. With -vvv you get detailed debugging messages. [David] o [Ncat] Chat mode now lets other participants know when someone connects or disconnects, and it also broadcasts a current list of participants at such times. [David] o [Ncat] Fixed a socket handling bug which could occur when you redirect Ncat stdin, such as "ncat -l --chat < /dev/null". The next user to connect would end up with file descriptor 0 (which is normally stdin) and thus confuse Ncat. [David] o [Zenmap] The "Scan Output" expanders in the diff window now behave more naturally. Some strange behavior on Windows was noted by Jah. [David] o The following OS detection tests are no longer included in OS fingerprints: U1.RUL, U1.TOS, IE.DLI, IE.SI, and IE.TOSI. URL, DLI, and SI were found not be helpful in distinguishing operating systems because they didn't vary. TOS and TOSI were disabled in 4.85BETA1 but now they are not included in prints at all. [David] o The compile-time Nmap ASCII dragon is now more ferocious thanks to better teeth alignment. [David] o Version 4.85BETA4 had a bug in the implementation of the new SEQ.CI test that could cause a closed-port IP ID to be written into the array for the SEQ.TI test and cause erroneous results. The bug was found and fixed by Guillaume Prigent. o Nbase has grown routines for calculating Adler32 and CRC32C checksums. This is needed for future SCTP support. [Daniel Roethlisberger] o [Zenmap] Zenmap no longer shows an error message when running Nmap with options that cause a zero-length XML file to be produced (like --iflist). [David] o Fixed an off-by-one error in printableSize() which could cause Nmap to crash while reporting NSE results. Also, NmapOutputTable's memory allocation strategy was improved to conserve memory. [Brandon, Patrick] o [Zenmap] We now give the --force option to setup.py for installation to ensure that it replaces all files. [David] o Nmap's --packet-trace, --version-trace, and --script-trace now use an Nsock trace level of 2 rather than 5. This removes some superfluous lines which can flood the screen. [David] o [Zenmap] Fixed a crash which could occur when loading the help URL if the path contains multibyte characters. [David] o [Ncat] The version number is now matched to the Nmap release it came with rather than always being 0.2. [David] o Fixed a strtok issue between load_exclude and TargetGroup::parse_expr that caused only the first exclude on a line to be loaded as well as an invalid read into free()'d memory in load_exclude(). [Brandon, David] o NSE's garbage collection system (for cleaning up sockets from completed threads, etc.) has been improved. [Patrick] Enjoy the new release and disenfect those systems! -Fyodor _______________________________________________ Sent through the nmap-hackers mailing list http://cgi.insecure.org/mailman/listinfo/nmap-hackers Archived at http://seclists.org
Current thread:
- Nmap 4.85BETA6 now avail w/Conficker detection Fyodor (Apr 01)