CVE-2024-47003: Github.com/mattermost/mattermost/server/v8 Mattermost Fails To Strip `embeds` Vulnerability

MODERATE
Advisory Identifier: GHSA-59hf-mpf8-pqjh
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CVSS 5.4
CWE-400
Published
Advisory Summary

CVE-2024-47003 is a MODERATE (CVSS 5.4) mattermost fails to strip `embeds` vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost fails to strip `embeds` from `metadata` when broadcasting `posted` events. Remediation is available by upgrading affected packages to version 8.0.0-20240806094731-69a8b3df0f9f.

CVE-2024-47003 at a Glance

CVE Identifier CVE-2024-47003
GHSA Identifier GHSA-59hf-mpf8-pqjh
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Github.com/mattermost/mattermost/server/v8
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 5.4

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

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

How to Fix CVE-2024-47003

To remediate this vulnerability, upgrade all affected Github.com/mattermost/mattermost/server/v8 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/mattermost/mattermost/server/v8 fixed: 8.0.0-20240806094731-69a8b3df0f9f 
Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20240806094731-69a8b3df0f9f
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 github.com/mattermost/mattermost/server/v8

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-47003, inspect your project dependencies for Github.com/mattermost/mattermost/server/v8:

inspect dependencies for github.com/mattermost/mattermost/server/v8

Analyze the terminal output to locate any version of Github.com/mattermost/mattermost/server/v8 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.0.0-20240806094731-69a8b3df0f9f), 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Github.com/mattermost/mattermost/server/v8, 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

Mattermost does not strip `embeds` from `metadata` when broadcasting `posted` events. This allows users to include arbitrary embeds in posts, which are then broadcasted via websockets. This can be exploited in many ways, for example to create permalinks with fully customizable content or to trigger a client Side Denial of Service (DoS) by sending a permalink with a non-string message. The advisory metadata references the appropriate go pseudo version available from pkg.go.dev

CVE-2024-47003 Affected Github.com/mattermost/mattermost/server/v8 Versions

1 component(s)
Fixed Versions:
8.0.0-20240806094731-69a8b3df0f9f
Product / Package Ecosystem Affected Versions Fixed Version
github.com/mattermost/mattermost/server/v8
golang/github.com/mattermost/mattermost/server/v8
Go
< 8.0.0-20240806094731-69a8b3df0f9f
8.0.0-20240806094731-69a8b3df0f9f

References

NVD — CVE-2024-47003 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-47003
Github.com/mattermost/mattermost/server/v8 Source Repository REPOSITORY
https://github.com/mattermost/mattermost/pull/27763
Security Fix Commit FIX COMMIT
https://github.com/mattermost/mattermost/commit/69a8b3df0f9fd3a7a5b792ec678b6191618d039b
Github.com/mattermost/mattermost/server/v8 Source Repository REPOSITORY
https://github.com/c0rydoras/cves/tree/main/CVE-2024-47003
Github.com/mattermost/mattermost/server/v8 Source Repository REPOSITORY
https://github.com/mattermost/mattermost
Github.com/mattermost/mattermost/server/v8 Security Information SECURITY
https://mattermost.com/security-updates

Frequently Asked Questions

What is CVE-2024-47003?
CVE-2024-47003 is a security vulnerability in Github.com/mattermost/mattermost/server/v8 involving Mattermost fails to strip `embeds` from `metadata` when broadcasting `posted` events under CWE-400: Uncontrolled Resource Consumption.
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
Affected versions include releases prior to 8.0.0-20240806094731-69a8b3df0f9f across affected packages: github.com/mattermost/mattermost/server/v8.
What version fixes CVE-2024-47003?
Upgrading to 8.0.0-20240806094731-69a8b3df0f9f (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/mattermost/mattermost/server/v8 affected?
Yes, github.com/mattermost/mattermost/server/v8 is affected in releases prior to 8.0.0-20240806094731-69a8b3df0f9f. Upgrade your dependency to 8.0.0-20240806094731-69a8b3df0f9f or later.
What is the CVSS score of CVE-2024-47003?
CVE-2024-47003 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
What CWE is associated with CVE-2024-47003?
CVE-2024-47003 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Go dependencies for CVE-2024-47003?
Run the dependency tree command: 'inspect dependencies for github.com/mattermost/mattermost/server/v8'. 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-59hf-mpf8-pqjh",
  "modified" : "2024-09-27T22:01:15Z",
  "published" : "2024-09-26T09:31:42Z",
  "aliases" : [ "CVE-2024-47003" ],
  "summary" : "Mattermost fails to strip `embeds` from `metadata` when broadcasting `posted` events",
  "details" : "Mattermost does not strip `embeds` from `metadata` when broadcasting `posted` events.\n\nThis allows users to include arbitrary embeds in posts, which are then broadcasted via websockets. This can be exploited in many ways, for example to create permalinks with fully customizable content or to trigger a client Side Denial of Service (DoS) by sending a permalink with a non-string message.\n\nThe advisory metadata references the appropriate go pseudo version available from pkg.go.dev",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "8.0.0-20240806094731-69a8b3df0f9f"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-47003"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mattermost/mattermost/pull/27763"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mattermost/mattermost/commit/69a8b3df0f9fd3a7a5b792ec678b6191618d039b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/c0rydoras/cves/tree/main/CVE-2024-47003"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mattermost/mattermost"
  }, {
    "type" : "WEB",
    "url" : "https://mattermost.com/security-updates"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-09-27T22:01:15Z",
    "nvd_published_at" : "2024-09-26T08:15:06Z"
  }
}