X-Git-Url: https://git.exim.org/exim-website.git/blobdiff_plain/a5db00a3c48584409e216f56e136abf4c8488cba..6a090e227924ff8e465706d40ee5b80fea1dba24:/templates/static/doc/security/CVE-2019-13917.txt diff --git a/templates/static/doc/security/CVE-2019-13917.txt b/templates/static/doc/security/CVE-2019-13917.txt new file mode 100644 index 0000000..e39f170 --- /dev/null +++ b/templates/static/doc/security/CVE-2019-13917.txt @@ -0,0 +1,83 @@ +CVE ID: CVE-2019-13917 +OVE ID: OVE-20190718-0006 +Date: 2019-07-18 +Credits: Jeremy Harris +Version(s): 4.85 up to and including 4.92 +Issue: A local or remote attacker can execute programs with root + privileges - if you've an unusual configuration. For details + see below. + +Coordinated Release Date (CRD) for Exim 4.92.1: + Thu Jul 25 10:00:00 UTC 2019 + +Contact: exim-security@exim.org + +We released Exim 4.92.1. This is a security update based on 4.92. + +Conditions to be vulnerable +=========================== + +If your configuration uses the ${sort } expansion for items that can be +controlled by an attacker (e.g. $local_part, $domain). The default +config, as shipped by the Exim developers, does not contain ${sort }. + +Details +======= + +The vulnerability is exploitable either remotely or locally and could +be used to execute other programs with root privilege. The ${sort } +expansion re-evaluates its items. + +Mitigation +========== + +Do not use ${sort } in your configuration. + +Fix +=== + +Install a fixed package supplied by your distribution. +or download and build a fixed version: + +For release tarballs (exim-4.92.1): + + http://ftp.exim.org/pub/exim/exim4/ + +The package files are signed with a key from the developers +key set: https://ftp.exim.org/pub/exim/Exim-Maintainers-Keyring.asc + +For the full Git repo: + + https://git.exim.org/exim.git + https://github.com/Exim/exim [mirror of the above] + - tag exim-4.92.1 + - branch exim-4.92.1+fixes + +The tagged commit is the officially released version. The tag is signed +with a key from the developers keyset. The +fixes branch isn't +officially maintained, but contains the security fix *and* useful +patches. The relevant commit is signed with a key from the developers +keyset. The old exim-4.92+fixes branch is being functionally replaced by +the new exim-4.92.1+fixes branch. + +If you can't install the above versions, ask your package maintainer for +a version containing the backported fix. On request and depending on our +resources we will support you in backporting the fix. (Please note, +that Exim project officially doesn't support versions prior the current +stable version.) + +Timeline +======== + +t0: Thu Jul 18 2019 + - this notice to distros@vs.openwall.org and exim-maintainers@exim.org + - open limited access to our security Git repo. See below. + +t0+~4d: Mon Jul 22 10:00:00 UTC 2019 [NOW] + - heads-up notice to oss-security@lists.openwall.com, + exim-users@exim.org, and exim-announce@exim.org + +t0+~7d: Thu Jul 25 10:00:00 UTC 2019 [NOW] + - Coordinated relase date + - publish the patches in our official and public Git repositories + and the packages on our FTP server.