Gentoo Archives: gentoo-dev

From: Ulrich Mueller <ulm@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] [News item review] Exim >=4.94 transports: tainted not permitted
Date: Sun, 02 May 2021 10:23:43
Message-Id: ufsz5a0yl@gentoo.org
In Reply to: [gentoo-dev] [News item review] Exim >=4.94 transports: tainted not permitted by Fabian Groffen
1 >>>>> On Sun, 02 May 2021, Fabian Groffen wrote:
2
3 > Title: Exim >=4.94 disallows tainted variables in transport configurations
4
5 Title is too long (GLEP 42 allows 50 chars max).
6
7 > Author: Fabian Groffen <grobian@g.o>
8 > Posted: 2021-05-??
9 > Revision: 1
10 > News-Item-Format: 2.0
11 > Display-If-Installed: mail-mta/exim
12
13 > Since the release of Exim-4.94, transports refuse to use tainted data in
14 > constructing a delivery location. If you use this in your transports,
15 > your configuration will break, causing errors and possible downtime.
16
17 > Particularly, the use of $local_part in any transport, should likely be
18 > updated with $local_part_data. Check your local_delivery transport,
19 > which historically used $local_part.
20
21 > Unfortunately there is not much documentation on "tainted" data for
22 > Exim[1], and to resolve this, non-official sources need to be used, such
23 > as [2] and [3].
24
25 I have no idea what this news item is trying to tell me. But I don't use
26 Exim, so probably that's the reason. :) Maybe mention at least that Exim
27 is a mailer?
28
29 Ulrich
30
31 > [1] https://lists.exim.org/lurker/message/20201109.222746.24ea3904.en.html
32 > [2] https://mox.sh/sysadmin/tainted-filename-errors-in-exim-4.94/
33 > [3] https://jimbobmcgee.wordpress.com/2020/07/29/de-tainting-exim-configuration-variables/

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