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GHSA-vjhf-8vqx-vqpq

CRITICAL

KubePi allows malicious actor to login with a forged JWT token via Hardcoded Jwtsigkeys

Also known asCVE-2023-22463GO-2023-1283
Published
Jan 6, 2023
Updated
Aug 20, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
1 known

EPSS Exploitation Probability

via FIRST.org ↗
91.5%probability of exploitation in next 30 days
Very High Risk100th percentile0.00%
89.3%90.2%91.1%92.0%89.8%91.5%Dec 25Apr 26Jun 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected
🐹github.com/KubeOperator/kubepi

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogithub.com/KubeOperator/kubepiall versions1.6.3
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Frequently Asked Questions

### 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`](https://github.com/KubeOperator/KubePi/blob/da784f5532ea2495b92708cacb32703bff3a45a3/internal/api/v1/session/session.go#L35), 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. ```gol
O3 Security · Impact-Aware SCA

Is GHSA-vjhf-8vqx-vqpq in your stack?

O3 detects GHSA-vjhf-8vqx-vqpq across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.