CVE-2024-47080: Matrix js sdk Matrix JavaScript SDK's Key History Vulnerability

HIGH
Advisory Identifier: GHSA-4jf8-g8wp-cx7c
CWE-287 CWE-200
Published
Advisory Summary

CVE-2024-47080 is a HIGH matrix javascript sdk's key history vulnerability (CWE-287: Improper Authentication) affecting Matrix js sdk libraries in the npm ecosystem. The issue involves matrix javascript sdk's key history sharing could share keys to malicious devices. Remediation is available by upgrading affected packages to version 34.8.0.

CVE-2024-47080 at a Glance

CVE Identifier CVE-2024-47080
GHSA Identifier GHSA-4jf8-g8wp-cx7c
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-287: Improper Authentication
Affected Product Matrix js sdk
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2024-47080

To remediate this vulnerability, upgrade all affected Matrix js sdk dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

matrix-js-sdk fixed: 34.8.0
npm install matrix-js-sdk@34.8.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

npm ls matrix-js-sdk

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2024-47080, inspect your project dependencies using npm:

npm ls matrix-js-sdk

Analyze the terminal output to locate any version of Matrix js sdk in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 34.8.0), your application is affected.

Note: The npm ls matrix-js-sdk command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. In Matrix js sdk, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact In matrix-js-sdk versions 9.11.0 through 34.7.0, the method `MatrixClient.sendSharedHistoryKeys` is vulnerable to interception by malicious homeservers. The method implements functionality proposed in [MSC3061](https://github.com/matrix-org/matrix-spec-proposals/pull/3061) and can be used by clients to share historical message keys with newly invited users, granting them access to past messages in the room. However, it unconditionally sends these "shared" keys to all of the invited user's devices, regardless of whether the user's cryptographic identity is verified or whether the user's devices are signed by that identity. This allows the attacker to potentially inject its own devices to receive sensitive historical keys without proper security checks. Note that this only affects clients running the SDK with the legacy crypto stack. Clients using the new Rust cryptography stack (i.e. those that call `MatrixClient.initRustCrypto()` instead of `MatrixClient.initCrypto()`) are unaffected by this vulnerability, because `MatrixClient.sendSharedHistoryKeys()` raises an exception in such environments. ### Patches Fixed in matrix-js-sdk 34.8.0 by removing the vulnerable functionality. ### Workarounds Remove use of affected functionality from clients. ### References - [MSC3061](https://github.com/matrix-org/matrix-spec-proposals/pull/3061) ### For more information If you have any questions or comments about this advisory, please email us at [security at matrix.org](mailto:security@matrix.org).

CVE-2024-47080 Affected Matrix js sdk Versions

1 component(s)
Fixed Versions:
34.8.0
Product / Package Ecosystem Affected Versions Fixed Version
matrix-js-sdk
npm
≥ 9.11.0
< 34.8.0
34.8.0

References

Frequently Asked Questions

What is CVE-2024-47080?
CVE-2024-47080 is a security vulnerability in Matrix js sdk involving Matrix JavaScript SDK's key history sharing could share keys to malicious devices under CWE-287: Improper Authentication.
Which Matrix js sdk versions are affected?
Affected versions include releases prior to 34.8.0 across affected packages: matrix-js-sdk.
What version fixes CVE-2024-47080?
Upgrading to 34.8.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is matrix-js-sdk affected?
Yes, matrix-js-sdk is affected in releases prior to 34.8.0. Upgrade your dependency to 34.8.0 or later.
What CWE is associated with CVE-2024-47080?
CVE-2024-47080 is classified under CWE-287: Improper Authentication (When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.).
How can I check npm dependencies for CVE-2024-47080?
Run the dependency tree command: 'npm ls matrix-js-sdk'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4jf8-g8wp-cx7c",
  "modified" : "2024-10-15T18:07:26Z",
  "published" : "2024-10-15T18:07:26Z",
  "aliases" : [ "CVE-2024-47080" ],
  "summary" : "Matrix JavaScript SDK's key history sharing could share keys to malicious devices",
  "details" : "### Impact\nIn matrix-js-sdk versions 9.11.0 through 34.7.0, the method `MatrixClient.sendSharedHistoryKeys` is vulnerable to interception by malicious homeservers.  The method implements functionality proposed in [MSC3061](https://github.com/matrix-org/matrix-spec-proposals/pull/3061) and can be used by clients to share historical message keys with newly invited users, granting them access to past messages in the room.\n\nHowever, it unconditionally sends these \"shared\" keys to all of the invited user's devices, regardless of whether the user's cryptographic identity is verified or whether the user's devices are signed by that identity. This allows the attacker to potentially inject its own devices to receive sensitive historical keys without proper security checks.\n\nNote that this only affects clients running the SDK with the legacy crypto stack. Clients using the new Rust cryptography stack (i.e. those that call `MatrixClient.initRustCrypto()` instead of `MatrixClient.initCrypto()`) are unaffected by this vulnerability, because `MatrixClient.sendSharedHistoryKeys()` raises an exception in such environments.\n\n### Patches\nFixed in matrix-js-sdk 34.8.0 by removing the vulnerable functionality.\n\n### Workarounds\nRemove use of affected functionality from clients.\n\n### References\n- [MSC3061](https://github.com/matrix-org/matrix-spec-proposals/pull/3061)\n\n### For more information\nIf you have any questions or comments about this advisory, please email us at [security at matrix.org](mailto:security@matrix.org).",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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" : "npm",
      "name" : "matrix-js-sdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.11.0"
      }, {
        "fixed" : "34.8.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-4jf8-g8wp-cx7c"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-47080"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/matrix-spec-proposals/pull/3061"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/matrix-js-sdk/commit/2fb1e659c81f75253c047832dc9dcc2beddfac5f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/matrix-org/matrix-js-sdk"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-287" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-10-15T18:07:26Z",
    "nvd_published_at" : "2024-10-15T15:15:12Z"
  }
}