GitHub Advisory DatabaseGHSA-9CWV-CPPX-MQJMImproper Authentication in Capsule Proxy
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.003 Low
EPSS
Percentile
69.0%
Impact
Using a malicious Connection header, an attacker with a proper authentication mechanism could start a privilege escalation towards the Kubernetes API Server, being able to exploit the cluster-admin Role bound to capsule-proxy.
Patches
Patch has been merged in the v0.2.1 release.
Workarounds
Upgrading is mandatory.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| github.com/clastix/capsule-proxy | lt | 0.2.1 |
Related
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.003 Low
EPSS
Percentile
69.0%