CVE-2021-27673: Tribalsystems/zenario Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-8hcm-jj4x-4gmr
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CVSS 4.8
CWE-79
Published
Advisory Summary

CVE-2021-27673 is a MODERATE (CVSS 4.8) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Tribalsystems/zenario libraries in the Packagist ecosystem. The issue involves reflected xss in tribalsystems/zenario. Remediation is available by upgrading affected packages to version 8.8.53370.

CVE-2021-27673 at a Glance

CVE Identifier CVE-2021-27673
GHSA Identifier GHSA-8hcm-jj4x-4gmr
Severity MODERATE
CVSS v3.1 Base Score 4.8
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Tribalsystems/zenario
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 4.8

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

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

How to Fix CVE-2021-27673

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

tribalsystems/zenario fixed: 8.8.53370 
Upgrade tribalsystems/zenario to 8.8.53370
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 tribalsystems/zenario

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-27673, inspect your project dependencies for Tribalsystems/zenario:

inspect dependencies for tribalsystems/zenario

Analyze the terminal output to locate any version of Tribalsystems/zenario in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.8.53370), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Tribalsystems/zenario, 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

Reflected XSS in the "admin_boxes.ajax.php" component of Tribal Systems Zenario CMS v8.8.52729 allows remote attackers to execute arbitrary code by injecting into the "cID" parameter when creating a new HTML component.

CVE-2021-27673 Affected Tribalsystems/zenario Versions

1 component(s)
Fixed Versions:
8.8.53370
Product / Package Ecosystem Affected Versions Fixed Version
tribalsystems/zenario
 Packagist
< 8.8.53370
8.8.53370

References

NVD — CVE-2021-27673 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27673
deadsh0t.medium.com/blind-error-based-a... WEB
https://deadsh0t.medium.com/blind-error-based-authenticated-sql-injection-on-zenario-8-8-52729-cms-d4705534df38
Tribalsystems/zenario Source Repository REPOSITORY
https://github.com/TribalSystems/Zenario
Tribalsystems/zenario Release RELEASE
https://github.com/TribalSystems/Zenario/releases/tag/8.8.53370
Tribalsystems/zenario Security Information SECURITY
http://packetstormsecurity.com/files/163083/Zenario-CMS-8.8.52729-SQL-Injection.html

Frequently Asked Questions

What is CVE-2021-27673?
CVE-2021-27673 is a security vulnerability in Tribalsystems/zenario involving reflected XSS in tribalsystems/zenario under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Tribalsystems/zenario versions are affected?
Affected versions include releases prior to 8.8.53370 across affected packages: tribalsystems/zenario.
What version fixes CVE-2021-27673?
Upgrading to 8.8.53370 (or the latest patched release for your respective branch) resolves the vulnerability.
Is tribalsystems/zenario affected?
Yes, tribalsystems/zenario is affected in releases prior to 8.8.53370. Upgrade your dependency to 8.8.53370 or later.
What is the CVSS score of CVE-2021-27673?
CVE-2021-27673 has a CVSS v3.1 base score of 4.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-27673?
CVE-2021-27673 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2021-27673?
Run the dependency tree command: 'inspect dependencies for tribalsystems/zenario'. 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-8hcm-jj4x-4gmr",
  "modified" : "2023-07-06T18:00:08Z",
  "published" : "2021-06-08T20:11:40Z",
  "aliases" : [ "CVE-2021-27673" ],
  "summary" : "reflected XSS in tribalsystems/zenario",
  "details" : "Reflected XSS in the \"admin_boxes.ajax.php\" component of Tribal Systems Zenario CMS v8.8.52729 allows remote attackers to execute arbitrary code by injecting into the \"cID\" parameter when creating a new HTML component.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "tribalsystems/zenario"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "8.8.53370"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-27673"
  }, {
    "type" : "WEB",
    "url" : "https://deadsh0t.medium.com/blind-error-based-authenticated-sql-injection-on-zenario-8-8-52729-cms-d4705534df38"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TribalSystems/Zenario"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TribalSystems/Zenario/releases/tag/8.8.53370"
  }, {
    "type" : "WEB",
    "url" : "http://packetstormsecurity.com/files/163083/Zenario-CMS-8.8.52729-SQL-Injection.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-19T21:43:48Z",
    "nvd_published_at" : "2021-04-15T14:15:00Z"
  }
}