CVE-2020-11529: Getgrav/grav Open Redirect Vulnerability

MODERATE
Advisory Identifier: GHSA-wrxc-mr2w-cjpv
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CVSS 6.1
CWE-601
Published
Advisory Summary

CVE-2020-11529 is a MODERATE (CVSS 6.1) open redirect vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Getgrav/grav libraries in the Packagist ecosystem. The issue involves open redirect in grav. Remediation is available by upgrading affected packages to version 1.6.23.

CVE-2020-11529 at a Glance

CVE Identifier CVE-2020-11529
GHSA Identifier GHSA-wrxc-mr2w-cjpv
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
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:3.1/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-2020-11529

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: 1.6.23 
Upgrade getgrav/grav to 1.6.23
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-2020-11529, 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 1.6.23), 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-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. 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

Common/Grav.php in Grav before 1.6.23 has an Open Redirect.

CVE-2020-11529 Affected Getgrav/grav Versions

1 component(s)
Fixed Versions:
1.6.23
Product / Package Ecosystem Affected Versions Fixed Version
getgrav/grav
 Packagist
< 1.6.23
1.6.23

References

Getgrav/grav Source Repository REPOSITORY
https://github.com/getgrav/grav
NVD — CVE-2020-11529 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-11529
Getgrav/grav Source Repository REPOSITORY
https://github.com/getgrav/grav/issues/3134
Security Fix Commit FIX COMMIT
https://github.com/getgrav/grav/commit/2eae104c7a4bf32bc26cb8073d5c40464bfda3f7
getgrav.org/ WEB
https://getgrav.org/#changelog

Frequently Asked Questions

What is CVE-2020-11529?
CVE-2020-11529 is a security vulnerability in Getgrav/grav involving Open Redirect in Grav under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Getgrav/grav versions are affected?
Affected versions include releases prior to 1.6.23 across affected packages: getgrav/grav.
What version fixes CVE-2020-11529?
Upgrading to 1.6.23 (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 1.6.23. Upgrade your dependency to 1.6.23 or later.
What is the CVSS score of CVE-2020-11529?
CVE-2020-11529 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2020-11529?
CVE-2020-11529 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check Packagist dependencies for CVE-2020-11529?
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-wrxc-mr2w-cjpv",
  "modified" : "2023-03-08T21:32:06Z",
  "published" : "2022-01-07T00:20:50Z",
  "aliases" : [ "CVE-2020-11529" ],
  "summary" : "Open Redirect in Grav",
  "details" : "Common/Grav.php in Grav before 1.6.23 has an Open Redirect.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/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" : "1.6.23"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-11529"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/getgrav/grav/issues/3134"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/getgrav/grav/commit/2eae104c7a4bf32bc26cb8073d5c40464bfda3f7"
  }, {
    "type" : "WEB",
    "url" : "https://getgrav.org/#changelog"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/getgrav/grav"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-19T22:30:40Z",
    "nvd_published_at" : "2020-04-04T19:15:00Z"
  }
}