CVE-2020-29553: Getgrav/grav Grav CMS Cross-Site Request Forgery Vulnerability

HIGH
Advisory Identifier: GHSA-fqff-vcvx-68h3
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CVSS 8.8
CWE-352
Published
Advisory Summary

CVE-2020-29553 is a HIGH (CVSS 8.8) grav cms cross-site request forgery vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Getgrav/grav libraries in the Packagist ecosystem. The issue involves grav cms cross-site request forgery (csrf). Remediation is available by upgrading affected packages to version 1.6.30.

CVE-2020-29553 at a Glance

CVE Identifier CVE-2020-29553
GHSA Identifier GHSA-fqff-vcvx-68h3
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Getgrav/grav
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.8

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

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

How to Fix CVE-2020-29553

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: Latest secure release 
Upgrade getgrav/grav to Latest secure release
getgrav/grav fixed: 1.6.30 
Upgrade getgrav/grav to 1.6.30
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-2020-29553, 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 1.6.30), 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. 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

The Scheduler in Grav CMS through 1.7.0-rc.17 allows an attacker to execute a system command by tricking an admin into visiting a malicious website (CSRF).

CVE-2020-29553 Affected Getgrav/grav Versions

2 component(s)
Fixed Versions:
1.6.30
Product / Package Ecosystem Affected Versions Fixed Version
getgrav/grav
 Packagist
≥ 1.7.0-beta.1
≤ 1.7.0-rc.17
getgrav/grav
 Packagist
< 1.6.30
1.6.30

References

NVD — CVE-2020-29553 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-29553
blog.bssi.fr/cve-2020-29553-cve-... WEB
https://blog.bssi.fr/cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav
Getgrav/grav Source Repository REPOSITORY
https://github.com/getgrav/grav

Frequently Asked Questions

What is CVE-2020-29553?
CVE-2020-29553 is a security vulnerability in Getgrav/grav involving Grav CMS Cross-Site Request Forgery (CSRF) under CWE-352: Cross-Site Request Forgery (CSRF).
Which Getgrav/grav versions are affected?
Affected versions include releases prior to 1.6.30 across affected packages: getgrav/grav.
What version fixes CVE-2020-29553?
Upgrading to 1.6.30 (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 Latest secure release, 1.6.30. Upgrade your dependency to Latest secure release, 1.6.30 or later.
What is the CVSS score of CVE-2020-29553?
CVE-2020-29553 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-29553?
CVE-2020-29553 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2020-29553?
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-fqff-vcvx-68h3",
  "modified" : "2024-04-24T22:05:51Z",
  "published" : "2022-05-24T17:44:32Z",
  "aliases" : [ "CVE-2020-29553" ],
  "summary" : "Grav CMS Cross-Site Request Forgery (CSRF)",
  "details" : "The Scheduler in Grav CMS through 1.7.0-rc.17 allows an attacker to execute a system command by tricking an admin into visiting a malicious website (CSRF).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getgrav/grav"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.7.0-beta.1"
      }, {
        "last_affected" : "1.7.0-rc.17"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getgrav/grav"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.6.30"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-29553"
  }, {
    "type" : "WEB",
    "url" : "https://blog.bssi.fr/cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/getgrav/grav"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T22:05:51Z",
    "nvd_published_at" : "2021-03-15T19:15:00Z"
  }
}