CVE-2020-27217: High severity eclipse hono vulnerability
In Eclipse Hono version 1.3.0 and 1.4.0 the AMQP protocol adapter does not verify the size of AMQP messages received from devices. In particular, a device may send messages that are bigger than the max-message-size that the protocol adapter has indicated during link establishment. While the AMQP 1.0 protocol explicitly disallows a peer to send such messages, a hand crafted AMQP 1.0 client could exploit this behavior in order to send a message of unlimited size to the adapter, eventually causing the adapter to fail with an out of memory exception.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2020-27217?
CVE-2020-27217 has not been assigned a specific severity rating by public databases but poses a risk of denial of service due to message overflow.
How do I fix CVE-2020-27217?
To resolve CVE-2020-27217, upgrade to Eclipse Hono version 1.5.0 or later where the message size verification has been implemented.
What systems are affected by CVE-2020-27217?
CVE-2020-27217 affects Eclipse Hono versions 1.3.0 and 1.4.0.
Can CVE-2020-27217 lead to data loss?
While CVE-2020-27217 is primarily a denial of service vulnerability, improperly handled large messages could potentially lead to data loss.
Is there a workaround for CVE-2020-27217 if I can't upgrade?
A temporary workaround for CVE-2020-27217 may involve monitoring and limiting the incoming message sizes manually until an upgrade can be performed.