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

Peter Korsgaard peter at korsgaard.com
Thu Sep 26 09:29:18 UTC 2019

>>>>> "Peter" == Peter Korsgaard <peter at korsgaard.com> writes:

 > 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 at korsgaard.com>

Committed to 2019.08.x, thanks.

Bye, Peter Korsgaard

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