CVE-2023-46254: Github.com/projectcapsule/capsule Capsule-proxy Service Discloses Namespaces Of Vulnerability
MODERATECVE-2023-46254 is a MODERATE (CVSS 4.3) capsule-proxy service discloses namespaces of vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Github.com/projectcapsule/capsule libraries in the Go ecosystem. The issue involves capsule-proxy service discloses namespaces of colliding tenants to owners of different tenants with the same serviceaccount name. Remediation is available by upgrading affected packages to version 0.4.5.
CVE-2023-46254 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
How to Fix CVE-2023-46254
To remediate this vulnerability, upgrade all affected Github.com/projectcapsule/capsule dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/projectcapsule/capsule to 0.4.5Upgrade github.com/projectcapsule/capsule-proxy to 0.4.5Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/projectcapsule/capsuleHow to Check if You Are Affected
To determine whether your application is affected by CVE-2023-46254, inspect your project dependencies for Github.com/projectcapsule/capsule:
inspect dependencies for github.com/projectcapsule/capsuleAnalyze the terminal output to locate any version of Github.com/projectcapsule/capsule in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.5), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Github.com/projectcapsule/capsule, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2023-46254 Affected Github.com/projectcapsule/capsule Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/projectcapsule/capsule
|
Go |
< 0.4.5
|
0.4.5
|
|
github.com/projectcapsule/capsule-proxy
|
Go |
< 0.4.5
|
0.4.5
|
References
Frequently Asked Questions
What is CVE-2023-46254?
Which Github.com/projectcapsule/capsule versions are affected?
What version fixes CVE-2023-46254?
Is github.com/projectcapsule/capsule affected?
Is github.com/projectcapsule/capsule-proxy affected?
What is the CVSS score of CVE-2023-46254?
What CWE is associated with CVE-2023-46254?
How can I check Go dependencies for CVE-2023-46254?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-6758-979h-249x",
"modified" : "2023-11-07T21:46:04Z",
"published" : "2023-11-07T21:46:04Z",
"aliases" : [ "CVE-2023-46254" ],
"summary" : "capsule-proxy service discloses Namespaces of colliding tenants to owners of different tenants with the same ServiceAccount name",
"details" : "### Summary\n\nA 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.\n\n### Details\n\n- Tenant `solar`, owned by a ServiceAccount named `tenant-owner` in the Namespace `solar`\n- Tenant `wind`, owned by a ServiceAccount named `tenant-owner` in the Namespace `wind`\n\n> Please, notice the same ServiceAccount name, although in different namespaces.\n\nThe Tenant owner `solar` would be able to list the namespaces of the Tenant `wind` and vice-versa, although this is not correct.\n\nThe bug introduces an exfiltration vulnerability since allows the listing of Namespace resources of other Tenants, although just in some specific conditions:\n\n1. `capsule-proxy` runs with the `--disable-caching=false` (default value: `false`)\n2. Tenant owners are ServiceAccount, with the same resource name, but in different Namespaces.\n\nThe CVE doesn't allow any privilege escalation on the outer tenant Namespace-scoped resources, since the Kubernetes RBAC is enforcing this.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/projectcapsule/capsule"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.4.5"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 0.4.4"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/projectcapsule/capsule-proxy"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.4.5"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 0.4.4"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/projectcapsule/capsule-proxy/security/advisories/GHSA-6758-979h-249x"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-46254"
}, {
"type" : "WEB",
"url" : "https://github.com/projectcapsule/capsule-proxy/commit/615202f7b02eaec7681336bd63daed1f39ae00c5"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/projectcapsule/capsule-proxy"
}, {
"type" : "WEB",
"url" : "https://github.com/projectcapsule/capsule-proxy/releases/tag/v0.4.5"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-200" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2023-11-07T21:46:04Z",
"nvd_published_at" : "2023-11-06T19:15:09Z"
}
}