CVE-2024-34353: Matrix sdk crypto Matrix-sdk-crypto Contains A Log Exposure Vulnerability

MODERATE
Advisory Identifier: GHSA-9ggc-845v-gcgv
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CVSS 5.5
CWE-532
Published
Advisory Summary

CVE-2024-34353 is a MODERATE (CVSS 5.5) matrix-sdk-crypto contains a log exposure vulnerability (CWE-532: Insertion of Sensitive Information into Log File) affecting Matrix sdk crypto libraries in the crates.io ecosystem. The issue involves matrix-sdk-crypto contains a log exposure of private key of the server-side key backup. Remediation is available by upgrading affected packages to version 0.7.1.

CVE-2024-34353 at a Glance

CVE Identifier CVE-2024-34353
GHSA Identifier GHSA-9ggc-845v-gcgv
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-532: Insertion of Sensitive Information into Log File
Affected Product Matrix sdk crypto
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-34353

To remediate this vulnerability, upgrade all affected Matrix sdk crypto 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-sdk-crypto fixed: 0.7.1 
Upgrade matrix-sdk-crypto to 0.7.1
Verify Direct and Transitive Dependencies

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

inspect dependencies for matrix-sdk-crypto

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-34353, inspect your project dependencies for Matrix sdk crypto:

inspect dependencies for matrix-sdk-crypto

Analyze the terminal output to locate any version of Matrix sdk crypto in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.7.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-532: Insertion of Sensitive Information into Log File, where the product writes sensitive information to a log file. In Matrix sdk crypto, 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

### Introduction 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. ### Impact Due to a logic bug introduced in https://github.com/matrix-org/matrix-rust-sdk/pull/2961/commits/71136e44c03c79f80d6d1a2446673bc4d53a2067, the matrix-sdk-crypto crate version 0.7.0 will sometimes log the private part of the backup key pair to Rust debug logs (using the `tracing` crate). ### Patches This issue has been resolved in matrix-sdk-crypto [version 0.7.1](https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1). ### Workarounds None. ### References - [crates.io release](https://crates.io/crates/matrix-sdk-crypto/0.7.1) ### 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-2024-34353 Affected Matrix sdk crypto Versions

1 component(s)
Fixed Versions:
0.7.1
Product / Package Ecosystem Affected Versions Fixed Version
matrix-sdk-crypto
 crates.io
≥ 0.7.0
< 0.7.1
All 1 versions
0.7.0
0.7.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-9ggc-845v-gcgv
NVD — CVE-2024-34353 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-34353
Security Fix Commit FIX COMMIT
https://github.com/matrix-org/matrix-rust-sdk/commit/71136e44c03c79f80d6d1a2446673bc4d53a2067
Security Fix Commit FIX COMMIT
https://github.com/matrix-org/matrix-rust-sdk/commit/fa10bbb5dd0f9120a51aa1854cec752e25790bb0
Matrix sdk crypto Source Repository REPOSITORY
https://github.com/matrix-org/matrix-rust-sdk
Matrix sdk crypto Release RELEASE
https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1

Frequently Asked Questions

What is CVE-2024-34353?
CVE-2024-34353 is a security vulnerability in Matrix sdk crypto involving matrix-sdk-crypto contains a log exposure of private key of the server-side key backup under CWE-532: Insertion of Sensitive Information into Log File.
Which Matrix sdk crypto versions are affected?
Affected versions include releases prior to 0.7.1 across affected packages: matrix-sdk-crypto.
What version fixes CVE-2024-34353?
Upgrading to 0.7.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is matrix-sdk-crypto affected?
Yes, matrix-sdk-crypto is affected in releases prior to 0.7.1. Upgrade your dependency to 0.7.1 or later.
What is the CVSS score of CVE-2024-34353?
CVE-2024-34353 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-34353?
CVE-2024-34353 is classified under CWE-532: Insertion of Sensitive Information into Log File (The product writes sensitive information to a log file.).
How can I check crates.io dependencies for CVE-2024-34353?
Run the dependency tree command: 'inspect dependencies for matrix-sdk-crypto'. 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
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9ggc-845v-gcgv",
  "modified" : "2024-05-14T20:40:56Z",
  "published" : "2024-05-13T16:04:37Z",
  "aliases" : [ "CVE-2024-34353" ],
  "summary" : "matrix-sdk-crypto contains a log exposure of private key of the server-side key backup",
  "details" : "### Introduction\n\nIn 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.\n\n### Impact\n\nDue to a logic bug introduced in https://github.com/matrix-org/matrix-rust-sdk/pull/2961/commits/71136e44c03c79f80d6d1a2446673bc4d53a2067, the matrix-sdk-crypto crate version 0.7.0 will sometimes log the private part of the backup key pair to Rust debug logs (using the `tracing` crate).\n\n### Patches\nThis issue has been resolved in matrix-sdk-crypto [version 0.7.1](https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1).\n\n### Workarounds\nNone.\n\n### References\n\n- [crates.io release](https://crates.io/crates/matrix-sdk-crypto/0.7.1)\n\n### For more information\n\nIf you have any questions or comments about this advisory, please email us at [security at matrix.org](mailto:security@matrix.org).\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "matrix-sdk-crypto"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.7.0"
      }, {
        "fixed" : "0.7.1"
      } ]
    } ],
    "versions" : [ "0.7.0" ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-9ggc-845v-gcgv"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-34353"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/matrix-rust-sdk/commit/71136e44c03c79f80d6d1a2446673bc4d53a2067"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/matrix-rust-sdk/commit/fa10bbb5dd0f9120a51aa1854cec752e25790bb0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/matrix-org/matrix-rust-sdk"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/matrix-org/matrix-rust-sdk/releases/tag/matrix-sdk-crypto-0.7.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-532" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-13T16:04:37Z",
    "nvd_published_at" : "2024-05-14T15:38:43Z"
  }
}