Publish Advisories

GHSA-mj4v-hp69-27x5 GHSA-vqv5-385r-2hf8
2026-05-22 18:04:22 -07:00 · 2025-02-05 21:32:49 +00:00
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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-vqv5-385r-2hf8",
+  "modified": "2025-02-05T21:30:35Z",
+  "published": "2025-02-05T21:30:35Z",
+  "aliases": [],
+  "summary": "Contrast's unauthenticated recovery allows Coordinator impersonation",
+  "details": "### Impact\n\nRecovering coordinators do not verify the seed provided by the recovering party. This allows an attacker to set up a coordinator with a manifest that passes validation, but with a secret seed controlled by the attacker. \n\nIf network traffic is redirected from the legitimate coordinator to the attacker's coordinator, a workload owner is susceptible to impersonation if either \n\n* they `set` a new manifest and don't compare the root CA cert with the existing one (this is the default of the `contrast` CLI) or\n* they `verify` the coordinator and don't compare the root CA cert with a trusted reference.\n\nUnder these circumstances, the attacker can:\n\n* Issue certificates that chain back to the attacker coordinator's root CA.\n* Recover arbitrary workload secrets of workloads deployed after the attack.\n\nThis issue does **not** affect the following:\n\n* secrets of the legitimate coordinator (seed, workload secrets, CA)\n* integrity of workloads, even when used with the rogue coordinator\n* certificates chaining back to the mesh CA\n\n### Patches\n\nThis issue is patched in Contrast v1.4.1.\n\n### Workarounds\n\nThe issue can be avoided by verifying the coordinator root CA cert against expectations.\n\n* At the first `set` call, keep a copy of the CA cert returned by the coordinator.\n* After subsequent `set` or `verify` calls, compare the returned CA cert with the backup copy. If it matches bit-for-bit, the coordinator is legitimate.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/edgelesssys/contrast"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "1.4.1"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 1.4.0"
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/edgelesssys/contrast/security/advisories/GHSA-vqv5-385r-2hf8"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/edgelesssys/contrast"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-285"
+    ],
+    "severity": "HIGH",
+    "github_reviewed": true,
+    "github_reviewed_at": "2025-02-05T21:30:35Z",
+    "nvd_published_at": null
+  }
+}