Publish GHSA-rfq8-j7rh-8hf2

2026-05-22 18:04:22 -07:00 · 2024-12-03 18:42:01 +00:00
parent f99188fddf
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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-rfq8-j7rh-8hf2",
+  "modified": "2024-12-03T18:40:39Z",
+  "published": "2024-12-03T18:40:39Z",
+  "aliases": [
+    "CVE-2024-52805"
+  ],
+  "summary": "Synapse allows unsupported content types to lead to memory exhaustion",
+  "details": "### Impact\n\nIn Synapse before 1.120.1, `multipart/form-data` requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks.\n\n### Patches\n\nSynapse 1.120.1 resolves the issue by denying requests with unsupported `multipart/form-data` content type.\n\n### Workarounds\n\nLimiting request sizes or blocking the `multipart/form-data` content type before the requests reach Synapse, for example in a reverse proxy, alleviates the issue. Another approach that mitigates the attack is to use a low `max_upload_size` in Synapse.\n\n### References\n\n- https://github.com/twisted/twisted/issues/4688#issuecomment-1167705518\n- https://github.com/twisted/twisted/issues/4688#issuecomment-2385711609\n\n### For more information\n\nIf you have any questions or comments about this advisory, please email us at [security at element.io](mailto:security@element.io).\n",
+  "severity": [
+    {
+      "type": "CVSS_V4",
+      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "PyPI",
+        "name": "matrix-synapse"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "1.120.1"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/element-hq/synapse/security/advisories/GHSA-rfq8-j7rh-8hf2"
+    },
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-52805"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/twisted/twisted/issues/4688#issuecomment-1167705518"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/twisted/twisted/issues/4688#issuecomment-2385711609"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/element-hq/synapse"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-770"
+    ],
+    "severity": "HIGH",
+    "github_reviewed": true,
+    "github_reviewed_at": "2024-12-03T18:40:39Z",
+    "nvd_published_at": "2024-12-03T17:15:12Z"
+  }
+}