CVE-2022-21647: Codeigniter4/framework Deserialization Of Untrusted Data Vulnerability

HIGH
Advisory Identifier: GHSA-w6jr-wj64-mc9x
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CVSS 7.7
CWE-502
Published
Advisory Summary

CVE-2022-21647 is a HIGH (CVSS 7.7) deserialization of untrusted data vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Codeigniter4/framework libraries in the Packagist ecosystem. The issue involves deserialization of untrusted data in codeigniter4. Remediation is available by upgrading affected packages to version 4.1.6.

CVE-2022-21647 at a Glance

CVE Identifier CVE-2022-21647
GHSA Identifier GHSA-w6jr-wj64-mc9x
Severity HIGH
CVSS v3.1 Base Score 7.7
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Codeigniter4/framework
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.7

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

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

How to Fix CVE-2022-21647

To remediate this vulnerability, upgrade all affected Codeigniter4/framework dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

codeigniter4/framework fixed: 4.1.6 
Upgrade codeigniter4/framework to 4.1.6
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 codeigniter4/framework

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-21647, inspect your project dependencies for Codeigniter4/framework:

inspect dependencies for codeigniter4/framework

Analyze the terminal output to locate any version of Codeigniter4/framework in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.1.6), 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-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Codeigniter4/framework, 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

### Impact Deserialization of Untrusted Data was found in the `old()` function in CodeIgniter4. Remote attackers may inject auto-loadable arbitrary objects with this vulnerability, and possibly execute existing PHP code on the server. We are aware of a working exploit, which can lead to SQL injection. ### Patches Upgrade to v4.1.6 or later. ### Workarounds Do not use: - `old()` and form_helper - `RedirectResponse::withInput()` and `redirect()->withInput()` ### References - [PHP Object Injection | OWASP](https://owasp.org/www-community/vulnerabilities/PHP_Object_Injection) ### For more information If you have any questions or comments about this advisory: * Open an issue in [codeigniter4/CodeIgniter4](https://github.com/codeigniter4/CodeIgniter4/issues) * Email us at [SECURITY.md](https://github.com/codeigniter4/CodeIgniter4/blob/develop/SECURITY.md)

CVE-2022-21647 Affected Codeigniter4/framework Versions

1 component(s)
Fixed Versions:
4.1.6
Product / Package Ecosystem Affected Versions Fixed Version
codeigniter4/framework
 Packagist
< 4.1.6
4.1.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-w6jr-wj64-mc9x
NVD — CVE-2022-21647 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-21647
Security Fix Commit FIX COMMIT
https://github.com/codeigniter4/CodeIgniter4/commit/ce95ed5765256e2f09f3513e7d42790e0d6948f5
Codeigniter4/framework Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/codeigniter4/framework/CVE-2022-21647.yaml
Codeigniter4/framework Source Repository REPOSITORY
https://github.com/codeigniter4/CodeIgniter4

Frequently Asked Questions

What is CVE-2022-21647?
CVE-2022-21647 is a security vulnerability in Codeigniter4/framework involving Deserialization of Untrusted Data in Codeigniter4 under CWE-502: Deserialization of Untrusted Data.
Which Codeigniter4/framework versions are affected?
Affected versions include releases prior to 4.1.6 across affected packages: codeigniter4/framework.
What version fixes CVE-2022-21647?
Upgrading to 4.1.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is codeigniter4/framework affected?
Yes, codeigniter4/framework is affected in releases prior to 4.1.6. Upgrade your dependency to 4.1.6 or later.
What is the CVSS score of CVE-2022-21647?
CVE-2022-21647 has a CVSS v3.1 base score of 7.7 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H.
What CWE is associated with CVE-2022-21647?
CVE-2022-21647 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Packagist dependencies for CVE-2022-21647?
Run the dependency tree command: 'inspect dependencies for codeigniter4/framework'. 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-w6jr-wj64-mc9x",
  "modified" : "2022-01-06T19:32:43Z",
  "published" : "2022-01-06T22:52:41Z",
  "aliases" : [ "CVE-2022-21647" ],
  "summary" : "Deserialization of Untrusted Data in Codeigniter4",
  "details" : "### Impact\nDeserialization of Untrusted Data was found in the `old()` function in CodeIgniter4.\nRemote attackers may inject auto-loadable arbitrary objects with this vulnerability, \nand possibly execute existing PHP code on the server.\nWe are aware of a working exploit, which can lead to SQL injection.\n\n### Patches\nUpgrade to v4.1.6 or later.\n\n### Workarounds\nDo not use:\n- `old()` and form_helper\n- `RedirectResponse::withInput()` and `redirect()->withInput()`\n\n### References\n- [PHP Object Injection | OWASP](https://owasp.org/www-community/vulnerabilities/PHP_Object_Injection)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [codeigniter4/CodeIgniter4](https://github.com/codeigniter4/CodeIgniter4/issues)\n* Email us at [SECURITY.md](https://github.com/codeigniter4/CodeIgniter4/blob/develop/SECURITY.md)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "codeigniter4/framework"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.1.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-w6jr-wj64-mc9x"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-21647"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/codeigniter4/CodeIgniter4/commit/ce95ed5765256e2f09f3513e7d42790e0d6948f5"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/codeigniter4/framework/CVE-2022-21647.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/codeigniter4/CodeIgniter4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-01-06T19:32:43Z",
    "nvd_published_at" : "2022-01-04T20:15:00Z"
  }
}