On Wed, 20 Jul 2022, Thomas Krichel via Exim-users wrote:
I've been running Mailman with exim4 for about 20 years now!
Yesterday, I upgraded my Debian to exim 4.96-3. Then I got hit by
this mailman problem. Log entry
| 2022-07-20 11:43:44 1oE87D-007hOf-2N ** [email protected]
| R=mailman_router T=mailman_transport: Tainted arg 2 for mailman_transport
| transport command: 'nep-technicians'
The list nep-technicians seems to exist
root@darni ~ # exim -bt [email protected]
[email protected]
router = mailman_router, transport = mailman_transport
Downgrading exim to 4.96-1 does not seem to fix the issue. Here
is the transporter
root@darni /etc/exim4 # cat ./conf.d/transport/14_exim4-config_mailman
mailman_transport:
driver = pipe
command = MM_WRAP \
'${if def:local_part_suffix \
{${sg{$local_part_suffix}{-(\\w+)(\\+.*)?}{\$1}}} \
{post}}' \
$local_part
current_directory = MM_HOME
home_directory = MM_HOME
user = MM_UID
group = MM_GID
just what the instruction say ... Here is my router
root@darni /etc/exim4 # cat ./conf.d/router/114_exim4-config_mailman | grep -v
^\#
mailman_router:
driver = accept
domains = +mm_domains
require_files = MM_LISTCHK
local_part_suffix_optional
local_part_suffix = -admin : \
-bounces : -bounces+* : \
-confirm : -confirm+* : \
-join : -leave : \
-owner : -request : \
-subscribe : -unsubscribe
transport = mailman_transport
Here is my template, again with comments left out for brefty
root@darni /etc/exim4 # cat conf.d/main/template_14_exim4-config_mailman |
grep -v ^\#
MM_HOME=/var/lib/mailman
MM_UID=list
MM_GID=list
domainlist mm_domains=lists.openlib.org
MM_WRAP=MM_HOME/mail/mailman
MM_LISTCHK=MM_HOME/lists/${lc::$local_part}/config.pck
A manual check of MM_LISTCHK suggests that nep-techncians
should be found since the config.pck is there.
root@darni ~ # ls /var/lib/mailman/lists/nep-technicians/config.pck
/var/lib/mailman/lists/nep-technicians/config.pck
What more to check?
You have checked everything, but you need to use an untainted
value in command. Based on
echo /var/lib/mailman/lists/nep-technicians/config.pck |\
sed -e 's/\/config.pck\$//' -e 's/\/.*\///g'config.pck
(the order of the replacements matters)
could you try replacing your transport with:
mailman_transport:
driver = pipe
command = MM_WRAP \
'${if def:local_part_suffix \
{${sg{$local_part_suffix}{-(\\w+)(\\+.*)?}{\$1}}} \
{post}}' \
${sg{sg{$local_part}{\/config.pck$}{}}{.*\/}{}}
current_directory = MM_HOME
home_directory = MM_HOME
user = MM_UID
group = MM_GID
?
I don't have an exim config system with MM_LISTCHK
and I have never tested the sg function in an exim config before,
so this is unlikely to be exactly right.
--
Andrew C. Aitchison Kendal, UK
[email protected]
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