Publish GHSA-5w4j-f78p-4wh9

2026-05-22 18:04:22 -07:00 · 2025-03-21 15:20:31 +00:00
parent f572ba225d
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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-5w4j-f78p-4wh9",
+  "modified": "2025-03-21T15:18:28Z",
+  "published": "2025-03-21T15:18:28Z",
+  "aliases": [
+    "CVE-2025-27612"
+  ],
+  "summary": "Libcontainer is affected by capabilities elevation similar to GHSA-f3fp-gc8g-vw66",
+  "details": "### Impact\nIn libcontainer, while creating a tenant container, the tenant builder accepts a list of capabilities to be added in the spec of tenant container. Code can be seen [here](https://github.com/youki-dev/youki/blob/9e63fa4da1672a78ca45100f3059a732784a5174/crates/libcontainer/src/container/tenant_builder.rs#L408) . The logic here adds the given capabilities to all capabilities of main container if present in spec, otherwise simply set provided capabilities as capabilities of the tenant container.\n\nHowever, GHSA-f3fp-gc8g-vw66 was opened on runc mentioning that setting inherited caps in any case for tenant container can lead to elevation of capabilities. For this, they added a fix [here](https://github.com/opencontainers/runc/blob/986451c24e17c8d4be3c454f60b1f7be4af3e8b4/exec.go#L234-L242) where they never set new inherited caps on tenant, and set ambient caps only if original container had inherited caps.\n\nSimilarly crun never sets inherited caps as can be seen [here](https://github.com/containers/crun/blob/3ec6298abd79e144fbf3fa6db90793ff4c0516f9/src/exec.c#L319).\n\n> [!NOTE]\nThis does not affect youki binary itself, as the exec implementation is partially broken and does not pass on the user-provided caps to tenant containers, this is only applicable if you are using libcontainer directly and using the tenant builder.\n\n### Workarounds\n- Do not pass any user-provided capabilities to the tenant builder, in which case no capabilities will be set on tenant.\n- Alternatively you can verify the capabilities of original container and filter the user passed capabilities before setting them on tenant.\n\n### References\n- https://github.com/opencontainers/runc/security/advisories/GHSA-f3fp-gc8g-vw66\n- https://man7.org/linux/man-pages/man7/capabilities.7.html",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "crates.io",
+        "name": "libcontainer"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "0.5.3"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/opencontainers/runc/security/advisories/GHSA-f3fp-gc8g-vw66"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/youki-dev/youki/security/advisories/GHSA-5w4j-f78p-4wh9"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/youki-dev/youki/commit/747e342d2026fbf3a395db3e2a491ebef00082f1"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/containers/crun/blob/3ec6298abd79e144fbf3fa6db90793ff4c0516f9/src/exec.c#L319"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/opencontainers/runc/blob/986451c24e17c8d4be3c454f60b1f7be4af3e8b4/exec.go#L234-L242"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/youki-dev/youki"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/youki-dev/youki/blob/9e63fa4da1672a78ca45100f3059a732784a5174/crates/libcontainer/src/container/tenant_builder.rs#L408"
+    },
+    {
+      "type": "WEB",
+      "url": "https://man7.org/linux/man-pages/man7/capabilities.7.html"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2025-03-21T15:18:28Z",
+    "nvd_published_at": null
+  }
+}