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  • #21280

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Created Jan 22, 2017 by Trac@tracbot

tor-resolve: Do not truncate too long hostnames

If a hostname is supplied to tor-resolve which is too long, it will be silently truncated, resulting in a different hostname lookup:

$ tor-resolve $(python -c 'print("google.com" + "m" * 256)')

If tor-resolve uses SOCKS5, the length is stored in an unsigned char, which overflows in this case and leads to the hostname "google.com". As this one is a valid hostname, it returns an address instead of giving an error due to the invalid supplied hostname.

Trac:
Username: junglefowl

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