[issue27612] socket.gethostbyname resolving octal IP addresses incorrectly

[Matt Robenolt]

Matt Robenolt added the comment:

> Why do you need octal addresses? What is your use case? :-p

I didn't, but an attacker leveraged this to bypass security. We had checks against `127.0.0.1`, but this resolved to `177.0.0.1` incorrectly, bypassing the check. We were using `socket.gethostbyname` which yielded this.

See https://github.com/getsentry/sentry/pull/3787 for a little bit more context.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27612>
_______________________________________