CVE-2020-27217 : Vulnerability Insights and Analysis
Learn about CVE-2020-27217 affecting Eclipse Hono versions 1.3.0 and 1.4.0. Discover the impact, technical details, and mitigation steps for this AMQP protocol adapter vulnerability.
Eclipse Hono versions 1.3.0 and 1.4.0 are affected by a vulnerability in the AMQP protocol adapter that allows a hand-crafted AMQP 1.0 client to send messages of unlimited size, potentially causing the adapter to fail with an out of memory exception.
Understanding CVE-2020-27217
This CVE involves improper validation of the size of AMQP messages received from devices in Eclipse Hono versions 1.3.0 and 1.4.0.
What is CVE-2020-27217?
The vulnerability in Eclipse Hono versions 1.3.0 and 1.4.0 allows a malicious actor to exploit the AMQP protocol adapter by sending oversized messages, potentially leading to denial of service.
The Impact of CVE-2020-27217
The vulnerability could be exploited by a hand-crafted AMQP 1.0 client to send messages of unlimited size, causing the adapter to fail with an out of memory exception.
Technical Details of CVE-2020-27217
The technical details of this CVE are as follows:
Vulnerability Description
The AMQP protocol adapter in Eclipse Hono versions 1.3.0 and 1.4.0 fails to verify the size of AMQP messages received from devices, allowing oversized messages to cause denial of service.
Affected Systems and Versions
- Product: Eclipse Hono
- Vendor: The Eclipse Foundation
- Versions Affected: 1.3.0, 1.4.0
Exploitation Mechanism
A hand-crafted AMQP 1.0 client can exploit this vulnerability by sending messages larger than the max-message-size indicated by the protocol adapter during link establishment.
Mitigation and Prevention
To address CVE-2020-27217, consider the following mitigation strategies:
Immediate Steps to Take
- Update Eclipse Hono to a patched version that addresses the vulnerability.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Implement proper input validation mechanisms to prevent similar vulnerabilities.
- Conduct regular security assessments and audits of the system.
Patching and Updates
- Apply patches provided by The Eclipse Foundation to fix the vulnerability in affected versions of Eclipse Hono.