CVE-2021-30108: Feehi/cms Server-Side Request Forgery Vulnerability

CRITICAL
Advisory Identifier: GHSA-gc45-j3m5-8qfq
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CVSS 9.1
CWE-918
Published
Advisory Summary

CVE-2021-30108 is a CRITICAL (CVSS 9.1) server-side request forgery vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Feehi/cms libraries in the Packagist ecosystem. The issue involves server-side request forgery in feehi cms. Remediation is available in the latest vendor maintenance releases.

CVE-2021-30108 at a Glance

CVE Identifier CVE-2021-30108
GHSA Identifier GHSA-gc45-j3m5-8qfq
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Feehi/cms
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.1

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:N/S:U/C:H/I:H/A:N).

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

How to Fix CVE-2021-30108

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

feehi/cms fixed: Latest secure release 
Upgrade feehi/cms to Latest secure release
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 feehi/cms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-30108, inspect your project dependencies for Feehi/cms:

inspect dependencies for feehi/cms

Analyze the terminal output to locate any version of Feehi/cms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Feehi/cms, 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

Feehi CMS 2.1.1 is affected by a Server-side request forgery (SSRF) vulnerability. When the user modifies the HTTP Referer header to any url, the server can make a request to it.

CVE-2021-30108 Affected Feehi/cms Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
feehi/cms
 Packagist
≤ 2.1.1

References

NVD — CVE-2021-30108 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30108
Feehi/cms Source Repository REPOSITORY
https://github.com/liufee/cms/issues/57
Feehi/cms Source Repository REPOSITORY
https://github.com/liufee/cms/issues/57#issuecomment-1230070460
Security Fix Commit FIX COMMIT
https://github.com/liufee/cms/commit/d45cb9cb26d6f5ef491fa2c7d87ac7f26091bd7c

Frequently Asked Questions

What is CVE-2021-30108?
CVE-2021-30108 is a security vulnerability in Feehi/cms involving Server-Side Request Forgery in Feehi CMS under CWE-918: Server-Side Request Forgery (SSRF).
Which Feehi/cms versions are affected?
Affected versions include releases prior to current release patches across affected packages: feehi/cms.
What version fixes CVE-2021-30108?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is feehi/cms affected?
Yes, feehi/cms is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-30108?
CVE-2021-30108 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2021-30108?
CVE-2021-30108 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check Packagist dependencies for CVE-2021-30108?
Run the dependency tree command: 'inspect dependencies for feehi/cms'. 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-gc45-j3m5-8qfq",
  "modified" : "2021-05-28T21:56:18Z",
  "published" : "2021-06-08T20:12:32Z",
  "aliases" : [ "CVE-2021-30108" ],
  "summary" : "Server-Side Request Forgery in Feehi CMS",
  "details" : "Feehi CMS 2.1.1 is affected by a Server-side request forgery (SSRF) vulnerability. When the user modifies the HTTP Referer header to any url, the server can make a request to it.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "feehi/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-30108"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/liufee/cms/issues/57"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/liufee/cms/issues/57#issuecomment-1230070460"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/liufee/cms/commit/d45cb9cb26d6f5ef491fa2c7d87ac7f26091bd7c"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-28T21:56:18Z",
    "nvd_published_at" : "2021-05-24T20:15:00Z"
  }
}