fix: SMB version detection (issue #2744)#2745
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- Since nmap version 7.93 the versions of SMB servers are returned in wrong format. - This commit fixes the root cause by changing `tohex` function. - `stdnse.tohex` is called from smb2 scripts to generate the name of the version. - See GH issue nmap#2744 for further details.
nnposter
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Aug 5, 2024
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This code is problematic on several counts:
- Per documentation, the separator is an arbitrary string, not a single character. The code would have to be significantly redesigned to make it work as expected.
- The code does not account for the possibility that the separator might be a character with special meaning when used inside Lua patterns.
- The replacement value is unnecessarily recalculated with every substitution. This should be moved out of the loop, just like
patalready is, to avoid performance penalty.
See #2901 for a more comprehensive fix.
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tohexfunction.stdnse.tohexis called from smb2 scripts to generate the name of the version.