CVE-2019-15846 outlines a vulnerability in Exim whereby a specially crafted SNI ending can be utilized to run arbitrary code on the vulnerable server
This vulnerability is not exploitable on any Sophos products, see the table below for more information.
Sophos Email Products and CVE-2019-15846
|Sophos XG Firewall||No||The TLS headers that are used to exploit this vulnerability are stripped by the product before reaching the vulnerable Exim code. *|
|Sophos UTM||No||The TLS headers that are used to exploit this vulnerability are stripped by the product before reaching the vulnerable Exim code. *|
|Sophos Email on Central||No||Product doesn't utilize Exim|
|Sophos Email Appliance||No||Product doesn't utilize Exim|
|Puremessage for Unix||No||Product doesn't utilize Exim|
|Puremessage for Exchange||No||Product doesn't utilize Exim|
|Cyberoam||No||Product doesn't utilize Exim|
|Reflexion||No||Product doesn't utilize Exim|
* Despite this vulnerability not being exploitable due to the current architecture of the Sophos XG and Sophos UTM products, we do still plan on releasing a patch for Exim on these platforms in an upcoming Maintenance Release.