In Eclipse Milo versions 0.6.0 through 1.1.4, OPC UA server diagnostics nodes do not enforce access authorization. An anonymous client can enable diagnostics over a None/None endpoint without a certificate; with a trusted client application certificate over SignAndEncrypt, it can read security diagnostics for other active sessions, exposing usernames, login history, authentication mechanisms, security modes and policies, and public client certificates.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | LOW |
| Integrity Impact | LOW |
| Availability Impact | NONE |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Attack Requirements | NONE |
| Privileges Required | NONE |
| User Interaction | NONE |
| Vulnerability Confidentiality | LOW |
| Vulnerability Integrity | LOW |
| Vulnerability Availability | NONE |
| Subsequent Confidentiality | NONE |
| Subsequent Integrity | NONE |
| Subsequent Availability | NONE |
Source: [email protected]
Type: Secondary
| Source | Type | Description |
|---|---|---|
| [email protected] | Secondary |
en
CWE-862
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| eclipse | milo | * | <built-in method update of dict object at 0x733d83f00f80> | Application |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:eclipse:milo:*:*:*:*:*:*:*:* |