Package: libmail-dkim-perl
Version: 0.40-1
Severity: normal
If a DKIM-Signature header is unfolded and refolded with spaces (which seems to
be a
somewhat valid operation) then dkimproxy-verify will report the message as
"fail (message has been altered)". To fix a prolem with such a message you
just have
to replace the spaces with tabs for folding that field.
This is a problem in that some versions of Mailman (such as 1:2.1.15-1+deb7u1 in
wheezy) refold the messages in that manner. If libmail-dkim-perl was to treat
a space
and a tab equally in the folding then it would correctly process signatures in
Mailman
mail.
In a header such as the following dkimproxy-verify will happily accept spaces
or tabs
for the start of the last 2 lines (IE during the b= part) but insists on tabs
for the
first 3 continuation lines. dkimproxy-verify is behaving inconsistently at
best in
this regard.
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=coker.com.au; s=2008;
t=1444964800; bh=7596ihno1HYY/GD9qa21P7bjJEwMazstX8qEtki1p+M=;
l=109; h=From:To:Subject:Date:From;
b=MLKvwuhurZcRtq8BQGC0jKsDGwKiA3m7euJ/9oqVxUdwDNg+L5tOqyKq/baSXdZWS
wYPzszDwG4qz/slhRW8imFuBennQwmaMmMXHyHo9MzI3/u2pGyY5kjez3kOAMZPNF2
rwOus3SRxYqJmv9PAg+QiDoczFL/QBH9rZI9P9yg=
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
Versions of packages libmail-dkim-perl depends on:
ii libcrypt-openssl-rsa-perl 0.28-2+b1
ii liberror-perl 0.17-1.2
ii libmailtools-perl 2.13-1
ii libnet-dns-perl 0.81-2
ii perl [libdigest-sha-perl] 5.20.2-6
libmail-dkim-perl recommends no packages.
libmail-dkim-perl suggests no packages.
-- no debconf information
