[Buildroot] [PATCH] package/mosquitto: security bump to version 1.6.6
peter at korsgaard.com
Wed Sep 18 15:42:12 UTC 2019
>>>>> "Titouan" == Titouan Christophe <titouan.christophe at railnova.eu> writes:
> Hello Peter and all,
> On 9/18/19 4:38 PM, Peter Korsgaard 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.
>> Also notice that 1.6.5 silently fixed a security issue:
>> 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
> Do you also intend to backport this into 2019.02 ?
Yes, but 2019.02.x uses 1.5.8, so there it makes more sense to move to
Bye, Peter Korsgaard
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