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Message-Id: <201003171423.23403.ludwig.nussel@suse.de>
Date: Wed, 17 Mar 2010 14:23:22 +0100
From: Ludwig Nussel <ludwig.nussel@...e.de>
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
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 :-)
cu
Ludwig
--
(o_ Ludwig Nussel
//\
V_/_ http://www.suse.de/
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nuernberg)
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