2 OVE ID: OVE-20190718-0006
5 Version(s): 4.85 up to and including 4.92
6 Issue: A local or remote attacker can execute programs with root
7 privileges - if you've an unusual configuration. For details
10 Coordinated Release Date (CRD) for Exim 4.92.1:
11 Thu Jul 25 10:00:00 UTC 2019
13 Contact: exim-security@exim.org
15 We released Exim 4.92.1. This is a security update based on 4.92.
17 Conditions to be vulnerable
18 ===========================
20 If your configuration uses the ${sort } expansion for items that can be
21 controlled by an attacker (e.g. $local_part, $domain). The default
22 config, as shipped by the Exim developers, does not contain ${sort }.
27 The vulnerability is exploitable either remotely or locally and could
28 be used to execute other programs with root privilege. The ${sort }
29 expansion re-evaluates its items.
34 Do not use ${sort } in your configuration.
39 Install a fixed package supplied by your distribution.
40 or download and build a fixed version:
42 For release tarballs (exim-4.92.1):
44 http://ftp.exim.org/pub/exim/exim4/
46 The package files are signed with a key from the developers
47 key set: https://ftp.exim.org/pub/exim/Exim-Maintainers-Keyring.asc
49 For the full Git repo:
51 https://git.exim.org/exim.git
52 https://github.com/Exim/exim [mirror of the above]
54 - branch exim-4.92.1+fixes
56 The tagged commit is the officially released version. The tag is signed
57 with a key from the developers keyset. The +fixes branch isn't
58 officially maintained, but contains the security fix *and* useful
59 patches. The relevant commit is signed with a key from the developers
60 keyset. The old exim-4.92+fixes branch is being functionally replaced by
61 the new exim-4.92.1+fixes branch.
63 If you can't install the above versions, ask your package maintainer for
64 a version containing the backported fix. On request and depending on our
65 resources we will support you in backporting the fix. (Please note,
66 that Exim project officially doesn't support versions prior the current
73 - this notice to distros@vs.openwall.org and exim-maintainers@exim.org
74 - open limited access to our security Git repo. See below.
76 t0+~4d: Mon Jul 22 10:00:00 UTC 2019 [NOW]
77 - heads-up notice to oss-security@lists.openwall.com,
78 exim-users@exim.org, and exim-announce@exim.org
80 t0+~7d: Thu Jul 25 10:00:00 UTC 2019 [NOW]
81 - Coordinated relase date
82 - publish the patches in our official and public Git repositories
83 and the packages on our FTP server.