Comments (3)
I've done a bit of research on case //:%aa@
by now (but there is more to do).
What I found so far is that:
- URI
//:%aa@
is well-formed despite looking weird (see grammar trace below) - The hostname of a URI can be empty (see grammar trace below)
hostText.first
points to right after@
, that looks okayhostText.afterLast
points to:
way earlier (and is set byParseOwnHostUserInfoNz
where I would not expect it)
For the (expected) grammar trace:
Case: //:%aa@
URI-reference = URI / relative-ref
relative-ref = relative-part [ "?" query ] [ "#" fragment ]
relative-part = "//" authority path-abempty
=> eats "//"
authority = [ userinfo "@" ] host [ ":" port ]
=> eats ":%aa" and then "@", hostname can be empty (see reg-name below)
userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
reg-name = *( unreserved / pct-encoded / sub-delims )
from uriparser.
Will have a closer look as soon as time permits. Thumbs up for the report!
from uriparser.
Thanks! I have been running a fuzzer for a week with 28 cores and have yet to find anything else. However, my fuzzing code doesn't have all the API calls and only covers ASCII/char. I build with wchar_t disabled.
from uriparser.
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