CVE-2023-35075: Github.com/mattermost/mattermost/server/v8 Mattermost Injection Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-jcgv-3pfq-j4hr
CVSS 3.1
CWE-74
Published
Advisory Summary

CVE-2023-35075 is a LOW (CVSS 3.1) mattermost injection vulnerability vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost injection vulnerability. Remediation is available by upgrading affected packages to version 8.1.4, 7.8.13.

CVE-2023-35075 at a Glance

CVE Identifier CVE-2023-35075
GHSA Identifier GHSA-jcgv-3pfq-j4hr
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Affected Product Github.com/mattermost/mattermost/server/v8
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 3.1

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

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

How to Fix CVE-2023-35075

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: 8.1.4
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-2023-35075, 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 8.1.4), 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-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. 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 use innerText / textContent when setting the channel name in the webapp during autocomplete, allowing an attacker to inject HTML to a victim's page by create a channel name that is valid HTML. No XSS is possible though.

CVE-2023-35075 Affected Github.com/mattermost/mattermost/server/v8 Versions

2 component(s)
Fixed Versions:
8.1.47.8.13
Product / Package Ecosystem Affected Versions Fixed Version
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-2023-35075?
CVE-2023-35075 is a security vulnerability in Github.com/mattermost/mattermost/server/v8 involving Mattermost Injection vulnerability under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection').
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
Affected versions include releases prior to 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-2023-35075?
Upgrading to 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 8.1.4. Upgrade your dependency to 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-2023-35075?
CVE-2023-35075 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2023-35075?
CVE-2023-35075 is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.).
How can I check Go dependencies for CVE-2023-35075?
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-jcgv-3pfq-j4hr",
  "modified" : "2023-11-28T20:50:03Z",
  "published" : "2023-11-27T12:30:54Z",
  "aliases" : [ "CVE-2023-35075" ],
  "summary" : "Mattermost Injection vulnerability",
  "details" : "Mattermost fails to use innerText / textContent when setting the channel name in the webapp during autocomplete, allowing an attacker to inject HTML to a victim's page by create a channel name that is valid HTML. No XSS is possible though.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "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-2023-35075"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mattermost/mattermost"
  }, {
    "type" : "WEB",
    "url" : "https://mattermost.com/security-updates"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-28T20:50:03Z",
    "nvd_published_at" : "2023-11-27T10:15:07Z"
  }
}