[Buildroot] [PATCH] package/mosquitto: security bump to version 1.6.6

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

On Wed, 18 Sep 2019 16:38:39 +0200
Peter Korsgaard <peter@korsgaard.com> wrote:

> Fixes a security issue. From the annoncement:
> 
> A vulnerability exists in Mosquitto versions 1.5 to 1.6.5 inclusive.
> 
> If a client sends a SUBSCRIBE packet containing a topic that consists of
> approximately 65400 or more '/' characters, i.e.  the topic hierarchy
> separator, then a stack overflow will occur.
> 
> The issue is fixed in Mosquitto 1.6.6 and 1.5.9.  Patches for older versions
> are available at https://mosquitto.org/files/cve/2019-hier
> 
> The fix addresses the problem by restricting the allowed number of topic
> hierarchy levels to 200.  An alternative fix is to increase the size of the
> stack by a small amount.
> 
> https://mosquitto.org/blog/2019/09/version-1-6-6-released/
> 
> Also notice that 1.6.5 silently fixed a security issue:
> 
> CVE-2019-11778
> 
> A vulnerability exists in Mosquitto version 1.6 to 1.6.4 inclusive, known as CVE-2019-11778
> 
> If an MQTT v5 client connects to Mosquitto, sets a last will and testament,
> sets a will delay interval, sets a session expiry interval, and the will
> delay interval is set longer than the session expiry interval, then a use
> after free error occurs, which has the potential to cause a crash in some
> situations.
> 
> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
> ---
>  package/mosquitto/mosquitto.hash | 2 +-
>  package/mosquitto/mosquitto.mk   | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)

Applied to master, thanks.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com