Summary
KubePi allows malicious actor to login with a forged JWT token via Hardcoded Jwtsigkeys
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
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.
Impact
Credentials are embedded in source code or a binary, making them accessible to anyone who can read the artifact. Typical impact: unauthorized access using the static credential.
CVE-2023-22463 has a CVSS score of 9.8 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.6.3); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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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.
Frequently Asked Questions
- What is CVE-2023-22463? CVE-2023-22463 is a critical-severity use of hard-coded credentials vulnerability in github.com/KubeOperator/kubepi (go), affecting versions <= 1.6.2. It is fixed in 1.6.3. Credentials are embedded in source code or a binary, making them accessible to anyone who can read the artifact.
- How severe is CVE-2023-22463? CVE-2023-22463 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of github.com/KubeOperator/kubepi are affected by CVE-2023-22463? github.com/KubeOperator/kubepi (go) versions <= 1.6.2 is affected.
- Is there a fix for CVE-2023-22463? Yes. CVE-2023-22463 is fixed in 1.6.3. Upgrade to this version or later.
- Is CVE-2023-22463 exploitable, and should I be worried? Whether CVE-2023-22463 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2023-22463 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2023-22463? Upgrade
github.com/KubeOperator/kubepito 1.6.3 or later.