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Date: Wed, 17 Mar 2010 16:26:16 +0300
From: ArkanoiD <ark@...ex.net>
To: oss-security@...ts.openwall.com
Cc: Brian Stafford <brian@...fford.uklinux.net>, libesmtp@...fford.uklinux.net,
security@...ntu.com, Pawel Salek <pawsa@...ochem.kth.se>,
jskarvad@...hat.com
Subject: Re: CVE Request: libesmtp does not check NULL bytes in commonName
Formally, they are not. But de facto they are there for a long time.
On Wed, Mar 17, 2010 at 02:23:22PM +0100, Ludwig Nussel wrote:
> Brian Stafford wrote:
> > Since both the original and patched versions of match_component()
> > implement wildcards rather less liberally than RFC 2818 implies, I
> > decided to move towards the approach in the I-D. match_component() now
> > accepts either a string or a single wildcard '*'. Matched characters
> > are validated against the set of valid domain name component characters
> > , that is, *.example.org will not match %.example.org, nor for that
> > matter will the pattern %.example.org. Question: should underline '_'
> > be in the set of valid characters?
>
> AFAIK underlines are not allowed in DNS. I'm sure someone knows the
> RFC for that too :-)
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