CVE-2018-5233: Getgrav/grav Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-977g-93f5-rqjx
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2018-5233 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Getgrav/grav libraries in the Packagist ecosystem. The issue involves grav cms cross-site scripting (xss) vulnerability. Remediation is available by upgrading affected packages to version 1.3.0.

CVE-2018-5233 at a Glance

CVE Identifier CVE-2018-5233
GHSA Identifier GHSA-977g-93f5-rqjx
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Getgrav/grav
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2018-5233

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

getgrav/grav fixed: 1.3.0 
Upgrade getgrav/grav to 1.3.0
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 getgrav/grav

How to Check if You Are Affected

To determine whether your application is affected by CVE-2018-5233, inspect your project dependencies for Getgrav/grav:

inspect dependencies for getgrav/grav

Analyze the terminal output to locate any version of Getgrav/grav in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.3.0), 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 Getgrav/grav, 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

Cross-site scripting (XSS) vulnerability in `system/src/Grav/Common/Twig/Twig.php` in Grav CMS before 1.3.0 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to admin/tools.

CVE-2018-5233 Affected Getgrav/grav Versions

1 component(s)
Fixed Versions:
1.3.0
Product / Package Ecosystem Affected Versions Fixed Version
getgrav/grav
 Packagist
< 1.3.0
1.3.0

References

NVD — CVE-2018-5233 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-5233
Getgrav/grav Source Repository REPOSITORY
https://github.com/getgrav/grav
sysdream.com/news/lab/2018-03-15... WEB
https://sysdream.com/news/lab/2018-03-15-cve-2018-5233-grav-cms-admin-plugin-reflected-cross-site-scripting-xss-vulnerability
Getgrav/grav Security Information SECURITY
http://www.openwall.com/lists/oss-security/2018/03/15/1

Frequently Asked Questions

What is CVE-2018-5233?
CVE-2018-5233 is a security vulnerability in Getgrav/grav involving Grav CMS Cross-site scripting (XSS) vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Getgrav/grav versions are affected?
Affected versions include releases prior to 1.3.0 across affected packages: getgrav/grav.
What version fixes CVE-2018-5233?
Upgrading to 1.3.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is getgrav/grav affected?
Yes, getgrav/grav is affected in releases prior to 1.3.0. Upgrade your dependency to 1.3.0 or later.
What is the CVSS score of CVE-2018-5233?
CVE-2018-5233 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2018-5233?
CVE-2018-5233 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-2018-5233?
Run the dependency tree command: 'inspect dependencies for getgrav/grav'. 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-977g-93f5-rqjx",
  "modified" : "2024-04-24T22:37:39Z",
  "published" : "2022-05-14T03:31:31Z",
  "aliases" : [ "CVE-2018-5233" ],
  "summary" : "Grav CMS Cross-site scripting (XSS) vulnerability",
  "details" : "Cross-site scripting (XSS) vulnerability in `system/src/Grav/Common/Twig/Twig.php` in Grav CMS before 1.3.0 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO to admin/tools.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getgrav/grav"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.3.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-5233"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/getgrav/grav"
  }, {
    "type" : "WEB",
    "url" : "https://sysdream.com/news/lab/2018-03-15-cve-2018-5233-grav-cms-admin-plugin-reflected-cross-site-scripting-xss-vulnerability"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2018/03/15/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T22:37:39Z",
    "nvd_published_at" : "2018-03-19T21:29:00Z"
  }
}