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FreeBSD: VID-61DB9B88-D091-11E9-8D41-97657151F8C2: Exim -- RCE with root privileges in TLS SNI handler

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FreeBSD: VID-61DB9B88-D091-11E9-8D41-97657151F8C2: Exim -- RCE with root privileges in TLS SNI handler

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
09/02/2019
Created
09/09/2019
Added
09/07/2019
Modified
09/07/2019

Description

Exim developers report:

If your Exim server accepts TLS connections, it is vulnerable. This does

not depend on the TLS libray, so both, GnuTLS and OpenSSL are affected.

The vulnerability is exploitable by sending a SNI ending in a

backslash-null sequence during the initial TLS handshake. The exploit

exists as a POC. For more details see the document qualys.mbx

Solution(s)

  • freebsd-upgrade-package-exim

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