Search criteria
9 vulnerabilities found for capsule-proxy by clastix
FKIE_CVE-2023-48312
Vulnerability from fkie_nvd - Published: 2023-11-24 18:15 - Updated: 2024-11-21 08:31
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
capsule-proxy is a reverse proxy for the capsule operator project. Affected versions are subject to a privilege escalation vulnerability which is based on a missing check if the user is authenticated based on the `TokenReview` result. All the clusters running with the `anonymous-auth` Kubernetes API Server setting disable (set to `false`) are affected since it would be possible to bypass the token review mechanism, interacting with the upper Kubernetes API Server. This privilege escalation cannot be exploited if you're relying only on client certificates (SSL/TLS). This vulnerability has been addressed in version 0.4.6. Users are advised to upgrade.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| clastix | capsule-proxy | * |
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"descriptions": [
{
"lang": "en",
"value": "capsule-proxy is a reverse proxy for the capsule operator project. Affected versions are subject to a privilege escalation vulnerability which is based on a missing check if the user is authenticated based on the `TokenReview` result. All the clusters running with the `anonymous-auth` Kubernetes API Server setting disable (set to `false`) are affected since it would be possible to bypass the token review mechanism, interacting with the upper Kubernetes API Server. This privilege escalation cannot be exploited if you\u0027re relying only on client certificates (SSL/TLS). This vulnerability has been addressed in version 0.4.6. Users are advised to upgrade."
},
{
"lang": "es",
"value": "Capsule-proxy es un proxy inverso para el proyecto del operador de c\u00e1psulas. Las versiones afectadas est\u00e1n sujetas a una vulnerabilidad de escalada de privilegios que se basa en una verificaci\u00f3n faltante si el usuario est\u00e1 autenticado seg\u00fan el resultado de \"TokenReview\". Todos los cl\u00fasteres que se ejecutan con la configuraci\u00f3n del servidor API de Kubernetes `anonymous-auth` deshabilitada (establecida en `false`) se ven afectados ya que ser\u00eda posible omitir el mecanismo de revisi\u00f3n de tokens, interactuando con el servidor API de Kubernetes superior. Esta escalada de privilegios no se puede aprovechar si conf\u00eda \u00fanicamente en certificados de cliente (SSL/TLS). Esta vulnerabilidad se ha solucionado en la versi\u00f3n 0.4.6. Se recomienda a los usuarios que actualicen."
}
],
"id": "CVE-2023-48312",
"lastModified": "2024-11-21T08:31:28.053",
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}
FKIE_CVE-2023-46254
Vulnerability from fkie_nvd - Published: 2023-11-06 19:15 - Updated: 2024-11-21 08:28
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
capsule-proxy is a reverse proxy for Capsule kubernetes multi-tenancy framework. A bug in the RoleBinding reflector used by `capsule-proxy` gives ServiceAccount tenant owners the right to list Namespaces of other tenants backed by the same owner kind and name. For example consider two tenants `solar` and `wind`. Tenant `solar`, owned by a ServiceAccount named `tenant-owner` in the Namespace `solar`. Tenant `wind`, owned by a ServiceAccount named `tenant-owner` in the Namespace `wind`. The Tenant owner `solar` would be able to list the namespaces of the Tenant `wind` and vice-versa, although this is not correct. The bug introduces an exfiltration vulnerability since allows the listing of Namespace resources of other Tenants, although just in some specific conditions: 1. `capsule-proxy` runs with the `--disable-caching=false` (default value: `false`) and 2. Tenant owners are ServiceAccount, with the same resource name, but in different Namespaces. This vulnerability doesn't allow any privilege escalation on the outer tenant Namespace-scoped resources, since the Kubernetes RBAC is enforcing this. This issue has been addressed in version 0.4.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| clastix | capsule | * | |
| clastix | capsule-proxy | * |
{
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"value": "capsule-proxy is a reverse proxy for Capsule kubernetes multi-tenancy framework. A bug in the RoleBinding reflector used by `capsule-proxy` gives ServiceAccount tenant owners the right to list Namespaces of other tenants backed by the same owner kind and name. For example consider two tenants `solar` and `wind`. Tenant `solar`, owned by a ServiceAccount named `tenant-owner` in the Namespace `solar`. Tenant `wind`, owned by a ServiceAccount named `tenant-owner` in the Namespace `wind`. The Tenant owner `solar` would be able to list the namespaces of the Tenant `wind` and vice-versa, although this is not correct. The bug introduces an exfiltration vulnerability since allows the listing of Namespace resources of other Tenants, although just in some specific conditions: 1. `capsule-proxy` runs with the `--disable-caching=false` (default value: `false`) and 2. Tenant owners are ServiceAccount, with the same resource name, but in different Namespaces. This vulnerability doesn\u0027t allow any privilege escalation on the outer tenant Namespace-scoped resources, since the Kubernetes RBAC is enforcing this. This issue has been addressed in version 0.4.5. Users are advised to upgrade. There are no known workarounds for this vulnerability."
},
{
"lang": "es",
"value": "Capsule-proxy es un proxy inverso para el framework multi-tenancy de Capsule Kubernetes. Un bug en el reflector RoleBinding utilizado por `capsule-proxy` otorga a los propietarios de tenants de ServiceAccount el derecho de enumerar espacios de nombres de otros tenants respaldados por el mismo tipo y nombre de propietario. Por ejemplo, considere dos tenant \"\"\"\"solar\"\"\"\" y \"\"\"\"wind\"\"\"\". El tenant \"\"\"\"solar\"\"\"\", propiedad de una cuenta de servicio denominada \"\"\"\"tenant-owner\"\"\"\" en el espacio de nombres \"\"\"\"solar\"\"\"\". El tenant \"\"\"\"wind\"\"\"\", propiedad de una cuenta de servicio denominada \"\"\"\"tenant-owner\"\"\"\" en el espacio de nombres \"\"\"\"wind\"\"\"\". El propietario del inquilino \"\"\"\"solar\"\"\"\" podr\u00eda enumerar los espacios de nombres del inquilino \"\"\"\"wind\"\"\"\" y viceversa, aunque esto no es correcto. El error introduce una vulnerabilidad de exfiltraci\u00f3n ya que permite enumerar los recursos del espacio de nombres de otros tenant, aunque solo en algunas condiciones espec\u00edficas:\n1. `capsule-proxy` se ejecuta con `--disable-caching=false` (valor predeterminado: `false` ) y \n2. Los propietarios de los tenant son ServiceAccount, con el mismo nombre de recurso, pero en diferentes espacios de nombres.\nEsta vulnerabilidad no permite ninguna escalada de privilegios en los recursos con \u00e1mbito de espacio de nombres del inquilino externo, ya que Kubernetes RBAC lo est\u00e1 aplicando. \nEste problema se solucion\u00f3 en la versi\u00f3n 0.4.5. Se recomienda a los usuarios que actualicen. No se conocen workarounds para esta vulnerabilidad."
}
],
"id": "CVE-2023-46254",
"lastModified": "2024-11-21T08:28:10.743",
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}
FKIE_CVE-2022-23652
Vulnerability from fkie_nvd - Published: 2022-02-22 20:15 - Updated: 2024-11-21 06:49
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
capsule-proxy is a reverse proxy for Capsule Operator which provides multi-tenancy in Kubernetes. In versions prior to 0.2.1 an attacker with a proper authentication mechanism may use a malicious `Connection` header to start a privilege escalation attack towards the Kubernetes API Server. This vulnerability allows for an exploit of the `cluster-admin` Role bound to `capsule-proxy`. There are no known workarounds for this issue.
References
| URL | Tags | ||
|---|---|---|---|
| security-advisories@github.com | https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8 | Patch, Third Party Advisory | |
| security-advisories@github.com | https://github.com/clastix/capsule-proxy/issues/188 | Exploit, Issue Tracking, Third Party Advisory | |
| security-advisories@github.com | https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm | Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://github.com/clastix/capsule-proxy/commit/efe91f68ebf8a9e3d21491dc57da7b8a746415d8 | Patch, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://github.com/clastix/capsule-proxy/issues/188 | Exploit, Issue Tracking, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://github.com/clastix/capsule-proxy/security/advisories/GHSA-9cwv-cppx-mqjm | Third Party Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| clastix | capsule-proxy | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
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"matchCriteriaId": "67F30FEB-4C18-4522-9B33-D66E83DB8F13",
"versionEndExcluding": "0.2.1",
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"operator": "OR"
}
]
}
],
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},
{
"lang": "es",
"value": "capsule-proxy es un proxy inverso para Capsule Operator que proporciona multi-tenancy en Kubernetes. En versiones anteriores a la 0.2.1 un atacante con un mecanismo de autenticaci\u00f3n adecuado puede utilizar una cabecera `Connection` maliciosa para iniciar un ataque de escalada de privilegios hacia el servidor de la API de Kubernetes. Esta vulnerabilidad permite explotar el rol `cluster-admin` vinculado a `capsule-proxy`. No hay soluciones conocidas para este problema"
}
],
"id": "CVE-2022-23652",
"lastModified": "2024-11-21T06:49:01.510",
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"type": "Secondary"
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}
CVE-2023-48312 (GCVE-0-2023-48312)
Vulnerability from cvelistv5 – Published: 2023-11-24 17:12 – Updated: 2024-08-02 21:23
VLAI?
Title
Authentication bypass using an empty token in capsule-proxy
Summary
capsule-proxy is a reverse proxy for the capsule operator project. Affected versions are subject to a privilege escalation vulnerability which is based on a missing check if the user is authenticated based on the `TokenReview` result. All the clusters running with the `anonymous-auth` Kubernetes API Server setting disable (set to `false`) are affected since it would be possible to bypass the token review mechanism, interacting with the upper Kubernetes API Server. This privilege escalation cannot be exploited if you're relying only on client certificates (SSL/TLS). This vulnerability has been addressed in version 0.4.6. Users are advised to upgrade.
Severity ?
9.8 (Critical)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| projectcapsule | capsule-proxy |
Affected:
< 0.4.6
|
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"x_transferred"
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}
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"title": "CVE Program Container"
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"vendor": "projectcapsule",
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}
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CVE-2023-46254 (GCVE-0-2023-46254)
Vulnerability from cvelistv5 – Published: 2023-11-06 18:34 – Updated: 2024-08-02 20:37
VLAI?
Title
Service accounts can see namespaces of other tenants in capsule-proxy
Summary
capsule-proxy is a reverse proxy for Capsule kubernetes multi-tenancy framework. A bug in the RoleBinding reflector used by `capsule-proxy` gives ServiceAccount tenant owners the right to list Namespaces of other tenants backed by the same owner kind and name. For example consider two tenants `solar` and `wind`. Tenant `solar`, owned by a ServiceAccount named `tenant-owner` in the Namespace `solar`. Tenant `wind`, owned by a ServiceAccount named `tenant-owner` in the Namespace `wind`. The Tenant owner `solar` would be able to list the namespaces of the Tenant `wind` and vice-versa, although this is not correct. The bug introduces an exfiltration vulnerability since allows the listing of Namespace resources of other Tenants, although just in some specific conditions: 1. `capsule-proxy` runs with the `--disable-caching=false` (default value: `false`) and 2. Tenant owners are ServiceAccount, with the same resource name, but in different Namespaces. This vulnerability doesn't allow any privilege escalation on the outer tenant Namespace-scoped resources, since the Kubernetes RBAC is enforcing this. This issue has been addressed in version 0.4.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Severity ?
4.3 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| projectcapsule | capsule-proxy |
Affected:
< 0.4.5
|
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CVE-2022-23652 (GCVE-0-2022-23652)
Vulnerability from cvelistv5 – Published: 2022-02-22 19:55 – Updated: 2025-04-22 18:21
VLAI?
Title
Privilege escalation using hop-by-hop Connection header
Summary
capsule-proxy is a reverse proxy for Capsule Operator which provides multi-tenancy in Kubernetes. In versions prior to 0.2.1 an attacker with a proper authentication mechanism may use a malicious `Connection` header to start a privilege escalation attack towards the Kubernetes API Server. This vulnerability allows for an exploit of the `cluster-admin` Role bound to `capsule-proxy`. There are no known workarounds for this issue.
Severity ?
8.8 (High)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| clastix | capsule-proxy |
Affected:
< 0.2.1
|
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CVE-2023-48312 (GCVE-0-2023-48312)
Vulnerability from nvd – Published: 2023-11-24 17:12 – Updated: 2024-08-02 21:23
VLAI?
Title
Authentication bypass using an empty token in capsule-proxy
Summary
capsule-proxy is a reverse proxy for the capsule operator project. Affected versions are subject to a privilege escalation vulnerability which is based on a missing check if the user is authenticated based on the `TokenReview` result. All the clusters running with the `anonymous-auth` Kubernetes API Server setting disable (set to `false`) are affected since it would be possible to bypass the token review mechanism, interacting with the upper Kubernetes API Server. This privilege escalation cannot be exploited if you're relying only on client certificates (SSL/TLS). This vulnerability has been addressed in version 0.4.6. Users are advised to upgrade.
Severity ?
9.8 (Critical)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| projectcapsule | capsule-proxy |
Affected:
< 0.4.6
|
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CVE-2023-46254 (GCVE-0-2023-46254)
Vulnerability from nvd – Published: 2023-11-06 18:34 – Updated: 2024-08-02 20:37
VLAI?
Title
Service accounts can see namespaces of other tenants in capsule-proxy
Summary
capsule-proxy is a reverse proxy for Capsule kubernetes multi-tenancy framework. A bug in the RoleBinding reflector used by `capsule-proxy` gives ServiceAccount tenant owners the right to list Namespaces of other tenants backed by the same owner kind and name. For example consider two tenants `solar` and `wind`. Tenant `solar`, owned by a ServiceAccount named `tenant-owner` in the Namespace `solar`. Tenant `wind`, owned by a ServiceAccount named `tenant-owner` in the Namespace `wind`. The Tenant owner `solar` would be able to list the namespaces of the Tenant `wind` and vice-versa, although this is not correct. The bug introduces an exfiltration vulnerability since allows the listing of Namespace resources of other Tenants, although just in some specific conditions: 1. `capsule-proxy` runs with the `--disable-caching=false` (default value: `false`) and 2. Tenant owners are ServiceAccount, with the same resource name, but in different Namespaces. This vulnerability doesn't allow any privilege escalation on the outer tenant Namespace-scoped resources, since the Kubernetes RBAC is enforcing this. This issue has been addressed in version 0.4.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Severity ?
4.3 (Medium)
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| projectcapsule | capsule-proxy |
Affected:
< 0.4.5
|
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CVE-2022-23652 (GCVE-0-2022-23652)
Vulnerability from nvd – Published: 2022-02-22 19:55 – Updated: 2025-04-22 18:21
VLAI?
Title
Privilege escalation using hop-by-hop Connection header
Summary
capsule-proxy is a reverse proxy for Capsule Operator which provides multi-tenancy in Kubernetes. In versions prior to 0.2.1 an attacker with a proper authentication mechanism may use a malicious `Connection` header to start a privilege escalation attack towards the Kubernetes API Server. This vulnerability allows for an exploit of the `cluster-admin` Role bound to `capsule-proxy`. There are no known workarounds for this issue.
Severity ?
8.8 (High)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| clastix | capsule-proxy |
Affected:
< 0.2.1
|
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