GHSA-4QG4-CVH2-CRGG

Vulnerability from github – Published: 2024-07-18 15:28 – Updated: 2024-07-19 15:27
VLAI?
Summary
matrix-sdk-crypto's `UserIdentity::is_verified` not checking verification status of own user identity while performing the check
Details

The UserIdentity::is_verified() method in the matrix-sdk-crypto crate before version 0.7.2 doesn't take into account the verification status of the user's own identity while performing the check and may as a result return a value contrary to what is implied by its name and documentation.

Impact

If the method is used to decide whether to perform sensitive operations towards a user identity, a malicious homeserver could manipulate the outcome in order to make the identity appear trusted. This is not a typical usage of the method, which lowers the impact. The method itself is not used inside the matrix-sdk-crypto crate.

Patches

The 0.7.2 release of the matrix-sdk-crypto crate includes a fix.

Workarounds

None.

Severity ?
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "matrix-sdk-crypto"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.7.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-40648"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-07-18T15:28:07Z",
    "nvd_published_at": "2024-07-18T17:15:05Z",
    "severity": "MODERATE"
  },
  "details": "The `UserIdentity::is_verified()` method in the matrix-sdk-crypto crate before version 0.7.2 doesn\u0027t take into account the verification status of the user\u0027s own identity while performing the check and may as a result return a value contrary to what is implied by its name and documentation.\n\n### Impact\n\nIf the method is used to decide whether to perform sensitive operations towards a user identity, a malicious homeserver could manipulate the outcome in order to make the identity appear trusted. This is not a typical usage of the method, which lowers the impact. The method itself is not used inside the `matrix-sdk-crypto` crate.\n\n### Patches\n\nThe 0.7.2 release of the `matrix-sdk-crypto` crate includes a fix.\n\n### Workarounds\n\nNone.\n",
  "id": "GHSA-4qg4-cvh2-crgg",
  "modified": "2024-07-19T15:27:44Z",
  "published": "2024-07-18T15:28:07Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-4qg4-cvh2-crgg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40648"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/matrix-rust-sdk/commit/76a7052149bb8f722df12da915b3a06d19a6695a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matrix-org/matrix-rust-sdk"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matrix-org/matrix-rust-sdk/releases/tag/0.7.2-crypto"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2024-0356.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "matrix-sdk-crypto\u0027s `UserIdentity::is_verified` not checking verification status of own user identity while performing the check"
}


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