matrix-sdk-crypto contains a log exposure of private key of the server-side key backup

{
  "id": "11bcfceec907054293f623b3726551656e5e4ff2a12e1db00e80124752a40d6e",
  "url": "https://osv.dev/vulnerability/CVE-2024-34353",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "matrix-sdk-crypto contains a log exposure of private key of the server-side key backup",
    "summary": "The matrix-sdk-crypto crate, part of the Matrix Rust SDK project, is an implementation of a Matrix end-to-end encryption state machine in Rust. In Matrix, the server-side `key backup` stores encrypted copies of Matrix message keys. This facilitates key sharing between a user's devices and provides a redundant copy in case all devices are lost. The key backup uses asymmetric cryptography, with each server-side key backup assigned a unique public-private key pair. Due to a logic bug introduced in commit 71136e44c03c79f80d6d1a2446673bc4d53a2067, matrix-sdk-crypto version 0.7.0 will sometimes log the private part of the backup key pair to Rust debug logs (using the `tracing` crate). This issue has been resolved in matrix-sdk-crypto version 0.7.1. No known workarounds are available.",
    "evidence": "osv:CVE-2024-34353",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2024-34353",
      "aliases": [
        "CVE-2024-34353",
        "GHSA-9ggc-845v-gcgv"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/matrix-org/matrix-rust-sdk",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3e17fc207246329d6aee928a960ac5cd8dbb5b4f"
                },
                {
                  "fixed": "71136e44c03c79f80d6d1a2446673bc4d53a2067"
                },
                {
                  "fixed": "fa10bbb5dd0f9120a51aa1854cec752e25790bb0"
                },
                {
                  "fixed": "c99f6657668977d46d8eb2368c6918fd30c36515"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "= 0.7.0"
                      },
                      {
                        "last_affected": "= 0.7.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "71136e44c03c79f80d6d1a2446673bc4d53a2067"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "fa10bbb5dd0f9120a51aa1854cec752e25790bb0"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c99f6657668977d46d8eb2368c6918fd30c36515"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "matrix-sdk-crypto-0.7.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "= 0.7.0",
            "0.7.1",
            "0.7.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-34353.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.199270161Z",
      "provider": "osv",
      "references": [
        "https://crates.io/crates/matrix-sdk-crypto/0.7.1",
        "https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/34xxx/CVE-2024-34353.json",
        "https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-9ggc-845v-gcgv",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-34353",
        "https://github.com/matrix-org/matrix-rust-sdk/commit/71136e44c03c79f80d6d1a2446673bc4d53a2067",
        "https://github.com/matrix-org/matrix-rust-sdk/commit/fa10bbb5dd0f9120a51aa1854cec752e25790bb0"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-532"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/34xxx/CVE-2024-34353.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-34353",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492854,
  "published_at": "2024-05-13T15:43:10.574+00:00"
}