by Kastro
Paper/Archive/CVE-2020-10283

CVE-2020-10283

PX4 MAVLink — RVD#3317: MAVLink version handshaking allows for an attacker to bypass authentication

EPSS 1%CVSS 9.8
critical.is priorityof 100
44
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 73.8.738 × 2014.8No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

The Micro Air Vehicle Link (MAVLink) protocol presents authentication mechanisms on its version 2.0 however according to its documentation, in order to maintain backwards compatibility, GCS and autopilot negotiate the version via the AUTOPILOT_VERSION message. Since this negotiation depends on the answer, an attacker may craft packages in a way that hints the autopilot to adopt version 1.0 of MAVLink for the communication. Given the lack of authentication capabilities in such version of MAVLink (refer to CVE-2020-10282), attackers may use this method to bypass authentication capabilities and interact with the autopilot directly.

Affected

ProductAffectedFixed inSource
MAVLink2.0–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Alias (CNA)8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgithub.com/aliasrobotics/RVD/issues/3316