Headline
GHSA-vjhf-8vqx-vqpq: KubePi allows malicious actor to login with a forged JWT token via Hardcoded Jwtsigkeys
Summary
The jwt authentication function of kubepi <= v1.6.2 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.
Details
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.
var JwtSigKey = []byte("signature_hmac_secret_shared_key")
var jwtMaxAge = 10 * time.Minute
type Handler struct {
userService user.Service
roleService role.Service
clusterService cluster.Service
rolebindingService rolebinding.Service
ldapService ldap.Service
jwtSigner *jwt.Signer
}
Affected Version
<= v1.6.2
Patches
The vulnerability has been fixed in v1.6.3.
https://github.com/KubeOperator/KubePi/commit/3be58b8df5bc05d2343c30371dd5fcf6a9fbbf8b : JWT key can be specified in app.yml, if leave it blank a random key will be used.
Workarounds
It is recommended to upgrade the version to v1.6.3.
For more information
If you have any questions or comments about this advisory, please open an issue.
Summary
The jwt authentication function of kubepi <= v1.6.2 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.
Details
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.
var JwtSigKey = []byte(“signature_hmac_secret_shared_key”) var jwtMaxAge = 10 * time.Minute
type Handler struct { userService user.Service roleService role.Service clusterService cluster.Service rolebindingService rolebinding.Service ldapService ldap.Service jwtSigner *jwt.Signer }
Affected Version
<= v1.6.2
Patches
The vulnerability has been fixed in v1.6.3.
KubeOperator/KubePi@3be58b8 : JWT key can be specified in app.yml, if leave it blank a random key will be used.
Workarounds
It is recommended to upgrade the version to v1.6.3.
For more information
If you have any questions or comments about this advisory, please open an issue.
References
- GHSA-vjhf-8vqx-vqpq
- https://nvd.nist.gov/vuln/detail/CVE-2023-22463
- KubeOperator/KubePi@3be58b8
- https://github.com/KubeOperator/KubePi/blob/da784f5532ea2495b92708cacb32703bff3a45a3/internal/api/v1/session/session.go#L35
- https://github.com/KubeOperator/KubePi/releases/tag/v1.6.3
Related news
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. 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.