nmap-7.94

[Bruce Dubbs]

New minor version. No python2!

[pierre]

Nmap 7.94 [2023-05-19]

• Zenmap and Ndiff now use Python 3! Thanks to the many contributors who made this effort possible:
  • [GH#2088][GH#1176][Zenmap]Updated Zenmap to Python 3 and PyGObject. [Jakub Kulík]
  • [GH#1807][GH#1176][Ndiff]Updated Ndiff to Python 3. [Brian Quigley]
  • Additional Python 3 update fixes by Sam James, Daniel Miller. Special thanks to those who opened Python 3-related issues and pull requests: Eli Schwartz, Romain Leonard, Varunram Ganesh, Pavel Zhukov, Carey Balboa, Hasan Aliyev, and others.
• [Windows]Upgraded Npcap (our Windows raw packet capturing and transmission driver) from version 1.71 to the latest version 1.75. It includes dozens of performance improvements, bug fixes and feature enhancements described at ​https://npcap.com/changelog.
• Nmap now prints vendor names based on MAC address for MA-S (24-bit), MA-M (28-bit), and MA-L (36-bit) registrations instead of the fixed 3-byte MAC prefix used previously for lookups.
• Added partial silent-install support to the Nmap Windows installer. It previously didn't offer silent mode (/S) because the free/demo version of Npcap Windoes packet capturing driver that it needs and ships with doesn't include a silent installer. Now with the /S option, Nmap checks whether Npcap is already installed (either the free version or OEM) and will silently install itself if so. This is similar to how the Wireshark installer works and is particularly helpful for organizations that want to fully automate their Nmap (and Npcap) deployments. See ​https://nmap.org/nmap-silent-install for more details.
• Lots of profile-guided memory and processing improvements for Nmap, including OS fingerprint matching, probe matching and retransmission lookups for large hostgroups, and service name lookups. Overhauled Nmap's string interning and several other startup-related procedures to speed up start times, especially for scans using OS detection. [Daniel Miller]
• Integrated many of the most-submitted IPv4 OS fingerprints for recent versions of Windows, iOS, macOS, Linux, and BSD. Added 22 fingerprints, bringing the new total to 5700!
• [NSE][GH#548]Added the tftp-version script which requests a nonexistent file from a TFTP server and matches the error message to a database of known software. [Mak Kolybabi]
• [Ncat][GH#1223]Ncat can now accept "connections" from multiple UDP hosts in listen mode with the --keep-open option. This also enables --broker and --chat via UDP. [Daniel Miller]
• [GH#2575]Upgraded OpenSSL binaries (for the Windows builds and for RPM's) to version 3.0.8. This resolves some CVE's (CVE-2022-3602; CVE-2022-3786) which don't impact Nmap proper since it doesn't do certificate validation, but could possibly impact Ncat when the --ssl-verify option is used.
• Upgrade included libraries: zlib 1.2.13, Lua 5.4.4, libpcap 1.10.4
• [GH#2532]Removed the bogus OpenSSL message from the Windows Nmap executable which looked like "NSOCK ERROR ssl_init_helper(): OpenSSL legacy provider failed to load." We actually already have the legacy provider built-in to our OpenSSL builds, and that's why loading the external one fails.
• [GH#2541]UDP port scan (-sU) and version scan (-sV) now both use the same data source, nmap-service-probes, for data payloads. Previously, the nmap-payloads file was used for port scan. Port scan responses will be used to kick-start the version matching process. [Daniel Miller]
• Nmap's service scan (-sV) can now probe the UDP service behind a DTLS tunnel, the same as it already does for TCP services with SSL/TLS encryption. The DTLSSessionReq probe has had its rarity lowered to 2 to allow it to be sent sooner in the scan. [Daniel Miller]
• [Ncat]Ncat in listen mode with --udp --ssl will use DTLS to secure incoming connections. [Daniel Miller]
• [GH#1023]Handle Internationalized Domain Names (IDN) like Яндекс.рф on platforms where getaddrinfo supports the AI_IDN flag. [Daniel Miller]
• [Ncat]Addressed an issue from the Debian bug tracker (​https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969314) regarding data received immediately after a SOCKS CONNECT response. Ncat can now be correctly used in the ProxyCommand option of OpenSSH.
• Improved DNS domain name parsing to avoid recursion and enforce name length limits, avoiding a theoretical stack overflow issue with certain crafted DNS server responses, reported by Philippe Antoine.
• [GH#2338][NSE]Fix mpint packing in ssh2 library, which was causing OpenSSH errors like "ssh_dispatch_run_fatal: bignum is negative" [Sami Loone]
• [GH#2507]Updates to the Japanese manpage translation by Taichi Kotake.
• [Ncat][GH#1026][GH#2426]Dramatically speed up Ncat transfers on Windows by avoiding a 125ms wait for every read from STDIN. [scriptjunkie]
• [GH#1192][Windows]Periodically reset the system idle timer to keep the system from going to sleep while scans are in process. This only affects port scans and OS detection scans, since NSE and version scan do not rely on timing data to adjust speed.
• Updated the Nmap Public Source License (NPSL) to Version 0.95. This just clarifies that the derivative works definition and all other license clauses only apply to parties who choose to accept the license in return for the special rights granted (such as Nmap redistribution rights). If a party can do everything they need to using copyright provisions outside of this license such as fair use, we support that and aren't trying to claim any control over their work. Versions of Nmap released under previous versions of the NPSL may also be used under the NPSL 0.95 terms.
• Avoid storing many small strings from IPv4 OS detection results in the global string_pool. These were effectively leaked after a host is done being scanned, since string_pool allocations are not freed until Nmap quits.

[pierre]

I see that the package provides its own set of CA-certificates in /usr/share/ncat/ca-bundle.crt, and it is very outdated (the files says it was taken from mozilla in 2018). I'm not sure what to do. ncat can be passed options to use another file. But maybe we should remove this file and symlink it to our /etc/pki/tls/certs/ca-bundle.crt.

[Bruce Dubbs]

If I do a grep on the source, the only places I see referencing ca-bundle isncat/ncat_ssl.h and that is OK. In ncat/Makefile{.,in} it defines DATAFILES = certs/ca-bundle.crt

There is also ncat/ncat_posix.c:#define NCAT_CA_CERTS_PATH (NCAT_DATADIR "/" NCAT_CA_CERTS_FILE)

Everything else seems to reference Windows or documentation.

[pierre]

Hmmm, so NCAT_CA_CERTS_PATH is /usr/share/ncat/ca-bundle.crt, I think, which is the very old version...

But it seems the default system location is used first, so not sure.

[pierre]

Fixed at 5bc6c45ac. Not touching the ca-bundle.

[Bruce Dubbs]

Milestone renamed