GHSA-cc97-g92w-jm65: Typo3/cms core TYPO3 CMS Insecure Deserialization & Vulnerability

CRITICAL
Share
CVSS 9.8
CWE-74
Published
Advisory Summary

GHSA-cc97-g92w-jm65 is a CRITICAL (CVSS 9.8) typo3 cms insecure deserialization & vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Typo3/cms core libraries in the Packagist ecosystem. The issue involves typo3 cms insecure deserialization & arbitrary code execution. Remediation is available by upgrading affected packages to version 8.7.17, 9.3.2, 7.6.30.

GHSA-cc97-g92w-jm65 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-cc97-g92w-jm65
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Affected Product Typo3/cms core
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:N/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 None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix GHSA-cc97-g92w-jm65

To remediate this vulnerability, upgrade all affected Typo3/cms core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

typo3/cms-core fixed: 8.7.17 
Upgrade typo3/cms-core to 8.7.17
typo3/cms-core fixed: 9.3.2 
Upgrade typo3/cms-core to 9.3.2
typo3/cms-core fixed: 7.6.30 
Upgrade typo3/cms-core to 7.6.30
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 typo3/cms-core

How to Check if You Are Affected

To determine whether your application is affected by GHSA-cc97-g92w-jm65, inspect your project dependencies for Typo3/cms core:

inspect dependencies for typo3/cms-core

Analyze the terminal output to locate any version of Typo3/cms core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.7.17), 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-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. In Typo3/cms core, 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

Phar files (formerly known as "PHP archives") can act als self extracting archives which leads to the fact that source code is executed when Phar files are invoked. The Phar file format is not limited to be stored with a dedicated file extension - "bundle.phar" would be valid as well as "bundle.txt" would be. This way, Phar files can be obfuscated as image or text file which would not be denied from being uploaded and persisted to a TYPO3 installation. Due to a missing sanitization of user input, those Phar files can be invoked by manipulated URLs in TYPO3 backend forms. A valid backend user account is needed to exploit this vulnerability. In theory the attack vector would be possible in the TYPO3 frontend as well, however no functional exploit has been identified so far.

GHSA-cc97-g92w-jm65 Affected Typo3/cms core Versions

3 component(s)
Fixed Versions:
8.7.179.3.27.6.30
Product / Package Ecosystem Affected Versions Fixed Version
typo3/cms-core
 Packagist
≥ 8.0.0
< 8.7.17
8.7.17
typo3/cms-core
 Packagist
≥ 9.0.0
< 9.3.2
9.3.2
typo3/cms-core
 Packagist
≥ 7.0.0
< 7.6.30
7.6.30

References

Security Fix Commit FIX COMMIT
https://github.com/TYPO3-CMS/core/commit/81c6e9e6e49ee4f924bd340fb007d271fa44aa16
Security Fix Commit FIX COMMIT
https://github.com/TYPO3-CMS/core/commit/854d03841b42123ab744c2591199b76ce65a8e45
Security Fix Commit FIX COMMIT
https://github.com/TYPO3-CMS/core/commit/aa4e270d04313fe7d8ea508a9c694db83875e981
Security Fix Commit FIX COMMIT
https://github.com/TYPO3-CMS/core/commit/dd0487bd8b4ec7204dbfff2b5812d797102a1778
Typo3/cms core Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/2018-07-12-2.yaml
Typo3/cms core Source Repository REPOSITORY
https://github.com/TYPO3-CMS/core
Typo3/cms core Security Information SECURITY
https://typo3.org/security/advisory/typo3-core-sa-2018-002

Frequently Asked Questions

What is GHSA-cc97-g92w-jm65?
GHSA-cc97-g92w-jm65 is a security vulnerability in Typo3/cms core involving TYPO3 CMS Insecure Deserialization & Arbitrary Code Execution under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection').
Which Typo3/cms core versions are affected?
Affected versions include releases prior to 8.7.17, 9.3.2, 7.6.30 across affected packages: typo3/cms-core.
What version fixes GHSA-cc97-g92w-jm65?
Upgrading to 8.7.17, 9.3.2, 7.6.30 (or the latest patched release for your respective branch) resolves the vulnerability.
Is typo3/cms-core affected?
Yes, typo3/cms-core is affected in releases prior to 8.7.17, 9.3.2, 7.6.30. Upgrade your dependency to 8.7.17, 9.3.2, 7.6.30 or later.
What is the CVSS score of GHSA-cc97-g92w-jm65?
GHSA-cc97-g92w-jm65 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with GHSA-cc97-g92w-jm65?
GHSA-cc97-g92w-jm65 is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.).
How can I check Packagist dependencies for GHSA-cc97-g92w-jm65?
Run the dependency tree command: 'inspect dependencies for typo3/cms-core'. 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-cc97-g92w-jm65",
  "modified" : "2024-05-30T13:52:08Z",
  "published" : "2024-05-30T13:52:08Z",
  "aliases" : [ ],
  "summary" : "TYPO3 CMS Insecure Deserialization & Arbitrary Code Execution",
  "details" : "Phar files (formerly known as \"PHP archives\") can act als self extracting archives which leads to the fact that source code is executed when Phar files are invoked. The Phar file format is not limited to be stored with a dedicated file extension - \"bundle.phar\" would be valid as well as \"bundle.txt\" would be. This way, Phar files can be obfuscated as image or text file which would not be denied from being uploaded and persisted to a TYPO3 installation. Due to a missing sanitization of user input, those Phar files can be invoked by manipulated URLs in TYPO3 backend forms. A valid backend user account is needed to exploit this vulnerability. In theory the attack vector would be possible in the TYPO3 frontend as well, however no functional exploit has been identified so far.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.7.17"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "fixed" : "9.3.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.0.0"
      }, {
        "fixed" : "7.6.30"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3-CMS/core/commit/81c6e9e6e49ee4f924bd340fb007d271fa44aa16"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3-CMS/core/commit/854d03841b42123ab744c2591199b76ce65a8e45"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3-CMS/core/commit/aa4e270d04313fe7d8ea508a9c694db83875e981"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3-CMS/core/commit/dd0487bd8b4ec7204dbfff2b5812d797102a1778"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/2018-07-12-2.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TYPO3-CMS/core"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-core-sa-2018-002"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-30T13:52:08Z",
    "nvd_published_at" : null
  }
}