Closed
Description
Describe the bug
When running nmap on a specific target, with the following parameters, nmap is crashing.
nmap -vv -PS443 -p 443 -sV --script http-ntlm-info --host-timeout 90
The following warnings are printed:
nmap: nse_nsock.cc:637: void receive_callback(nsock_pool, nsock_event, void*): Assertion `lua_status(L) == 1' failed.
And then nmap crash:
signal: aborted (core dumped)
To Reproduce
I'm not able to share the target on which this happens.
Expected behavior
It should not crash.
Version info (please complete the following information):
OS: Ubuntu Noble
$ nmap --iflist
************************INTERFACES************************
DEV (SHORT) IP/MASK TYPE UP MTU MAC
lo (lo) 127.0.0.1/8 loopback up 65536
lo (lo) ::1/128 loopback up 65536
tunl0 (tunl0) (none)/0 other down 1480
sit0 (sit0) (none)/0 other down 1480
ip6tnl0 (ip6tnl0) (none)/0 other down 1452
eth0 (eth0) 192.168.215.3/24 ethernet up 1500 1A:52:47:09:39:56
**************************ROUTES**************************
DST/MASK DEV METRIC GATEWAY
192.168.215.0/24 eth0 0
0.0.0.0/0 eth0 0 192.168.215.1
::1/128 lo 0
$ nmap --version
Nmap version 7.97 ( https://nmap.org )
Platform: x86_64-redhat-linux-gnu
Compiled with: nmap-liblua-5.4.7 openssl-3.0.16 nmap-libssh2-1.11.1 nmap-libz-1.3.1 nmap-libpcre2-10.45 nmap-libpcap-(with nmap-libdnet-1.18.0 ipv6
Compiled without:
Available nsock engines: epoll poll select
$ ldd $(which nmap)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007ffffffbf000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fffffd3f000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fffffc56000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fffffc28000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fffffa16000)
/lib64/ld-linux-x86-64.so.2 (0x00007ffffffc6000)
Workaround
When running nmap with -n, it doesn't crash:
-n/-R: Never do DNS resolution/Always resolve