CVE-2023-48268: Github.com/mattermost/mattermost/server/v8 Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-j4c3-3h73-74m9
CVSS 4.3
CWE-400
Published
Advisory Summary

CVE-2023-48268 is a MODERATE (CVSS 4.3) remote code execution vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost uncontrolled resource consumption vulnerability. Remediation is available by upgrading affected packages to version 9.1.1, 9.0.2, 8.1.4, 7.8.13.

CVE-2023-48268 at a Glance

CVE Identifier CVE-2023-48268
GHSA Identifier GHSA-j4c3-3h73-74m9
Severity MODERATE
CVSS v3.1 Base Score 4.3
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: 4.3

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:N/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 None (I:N)
Availability Low (A:L)

How to Fix CVE-2023-48268

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: 9.1.1
Upgrade github.com/mattermost/mattermost/server/v8 to 9.1.1
github.com/mattermost/mattermost/server/v8 fixed: 9.0.2
Upgrade github.com/mattermost/mattermost/server/v8 to 9.0.2
github.com/mattermost/mattermost/server/v8 fixed: 8.1.4
Upgrade github.com/mattermost/mattermost/server/v8 to 8.1.4
github.com/mattermost/mattermost-server/v6 fixed: 7.8.13
Upgrade github.com/mattermost/mattermost-server/v6 to 7.8.13
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-2023-48268, 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 9.1.1), 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-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 fails to limit the amount of data extracted from compressed archives during board import in Mattermost Boards allowing an attacker to consume excessive resources, possibly leading to Denial of Service, by importing a board using a specially crafted zip (zip bomb).

CVE-2023-48268 Affected Github.com/mattermost/mattermost/server/v8 Versions

4 component(s)
Fixed Versions:
9.1.19.0.28.1.47.8.13
Product / Package Ecosystem Affected Versions Fixed Version
github.com/mattermost/mattermost/server/v8
Go
≥ 9.1.0
< 9.1.1
9.1.1
github.com/mattermost/mattermost/server/v8
Go
≥ 9.0.0
< 9.0.2
9.0.2
github.com/mattermost/mattermost/server/v8
Go
< 8.1.4
8.1.4
github.com/mattermost/mattermost-server/v6
Go
< 7.8.13
7.8.13

References

Frequently Asked Questions

What is CVE-2023-48268?
CVE-2023-48268 is a security vulnerability in Github.com/mattermost/mattermost/server/v8 involving Mattermost Uncontrolled Resource Consumption vulnerability under CWE-400: Uncontrolled Resource Consumption.
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
Affected versions include releases prior to 9.1.1, 9.0.2, 8.1.4, 7.8.13 across affected packages: github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost-server/v6.
What version fixes CVE-2023-48268?
Upgrading to 9.1.1, 9.0.2, 8.1.4, 7.8.13 (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 9.1.1, 9.0.2, 8.1.4. Upgrade your dependency to 9.1.1, 9.0.2, 8.1.4 or later.
Is github.com/mattermost/mattermost-server/v6 affected?
Yes, github.com/mattermost/mattermost-server/v6 is affected in releases prior to 7.8.13. Upgrade your dependency to 7.8.13 or later.
What is the CVSS score of CVE-2023-48268?
CVE-2023-48268 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2023-48268?
CVE-2023-48268 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-2023-48268?
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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-j4c3-3h73-74m9",
  "modified" : "2023-11-28T20:47:58Z",
  "published" : "2023-11-27T12:30:54Z",
  "aliases" : [ "CVE-2023-48268" ],
  "summary" : "Mattermost Uncontrolled Resource Consumption vulnerability",
  "details" : "Mattermost fails to limit the amount of data extracted from compressed archives during board import in Mattermost Boards allowing an attacker to consume excessive resources, possibly leading to Denial of Service, by importing a board using a specially crafted zip (zip bomb).\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.1.0"
      }, {
        "fixed" : "9.1.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "9.0.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost/server/v8"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "8.1.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mattermost/mattermost-server/v6"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "7.8.13"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-48268"
  }, {
    "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" : "2023-11-28T20:47:58Z",
    "nvd_published_at" : "2023-11-27T10:15:08Z"
  }
}