Netmaker through 1.7.0 contains an authorization bypass vulnerability in the updateExtClient handler that allows network-scoped users to modify external clients on other networks. Attackers with external client permissions on one network can send PUT requests to /api/extclients/{network}/{clientid} to replace public keys, disable clients, and obtain WireGuard private keys.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Netmaker Netmaker
cpe:2.3:a:netmaker:netmaker:*:*:*:*:*:*:*:*
|
— |
<= 1.7.0
|
References 6
https://github.com/gravitl/netmaker/issues/3875
NVD
https://github.com/gravitl/netmaker/pull/4153
NVD
https://github.com/gravitl/netmaker/commit/332d8b9bab030ee65e78b9141259e4e0e80a…
NVD
https://github.com/gravitl/netmaker/blob/v1.7.0/controllers/ext_client.go#L879
NVD
https://github.com/gravitl/netmaker
NVD
https://www.vulncheck.com/advisories/netmaker-through-1.7.0-authorization-bypas…
VulnCheck Advisory: Netmaker through 1.7.0 Authorization Bypass via updateExtClient Unscoped Lookup