CVE-2019-16700: Slub/slub events Slub_events For Typo3 Arbitrary File Vulnerability

CRITICAL
Advisory Identifier: GHSA-5pww-3mfc-g8vr
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CVSS 9.8
CWE-434
Published
Advisory Summary

CVE-2019-16700 is a CRITICAL (CVSS 9.8) slub_events for typo3 arbitrary file vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Slub/slub events libraries in the Packagist ecosystem. The issue involves slub_events for typo3 arbitrary file upload. Remediation is available by upgrading affected packages to version 3.0.3.

CVE-2019-16700 at a Glance

CVE Identifier CVE-2019-16700
GHSA Identifier GHSA-5pww-3mfc-g8vr
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product Slub/slub events
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 CVE-2019-16700

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

slub/slub-events fixed: 3.0.3 
Upgrade slub/slub-events to 3.0.3
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 slub/slub-events

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-16700, inspect your project dependencies for Slub/slub events:

inspect dependencies for slub/slub-events

Analyze the terminal output to locate any version of Slub/slub events in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.3), 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-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. In Slub/slub events, 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 slub_events (aka SLUB: Event Registration) extension through 3.0.2 for TYPO3 allows uploading of arbitrary files to the webserver. For versions 1.2.2 and below, this results in Remote Code Execution. In versions later than 1.2.2, this can result in Denial of Service, since the web space can be filled up with arbitrary files.

CVE-2019-16700 Affected Slub/slub events Versions

1 component(s)
Fixed Versions:
3.0.3
Product / Package Ecosystem Affected Versions Fixed Version
slub/slub-events
 Packagist
< 3.0.3
3.0.3

References

NVD — CVE-2019-16700 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-16700
extensions.typo3.org/extension/slub_even... WEB
https://extensions.typo3.org/extension/slub_events
Slub/slub events Security Information SECURITY
https://typo3.org/security/advisory/typo3-ext-sa-2019-017

Frequently Asked Questions

What is CVE-2019-16700?
CVE-2019-16700 is a security vulnerability in Slub/slub events involving slub_events for Typo3 Arbitrary File Upload under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Slub/slub events versions are affected?
Affected versions include releases prior to 3.0.3 across affected packages: slub/slub-events.
What version fixes CVE-2019-16700?
Upgrading to 3.0.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is slub/slub-events affected?
Yes, slub/slub-events is affected in releases prior to 3.0.3. Upgrade your dependency to 3.0.3 or later.
What is the CVSS score of CVE-2019-16700?
CVE-2019-16700 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 CVE-2019-16700?
CVE-2019-16700 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check Packagist dependencies for CVE-2019-16700?
Run the dependency tree command: 'inspect dependencies for slub/slub-events'. 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-5pww-3mfc-g8vr",
  "modified" : "2023-08-01T22:40:15Z",
  "published" : "2022-05-24T16:58:56Z",
  "aliases" : [ "CVE-2019-16700" ],
  "summary" : "slub_events for Typo3 Arbitrary File Upload",
  "details" : "The slub_events (aka SLUB: Event Registration) extension through 3.0.2 for TYPO3 allows uploading of arbitrary files to the webserver. For versions 1.2.2 and below, this results in Remote Code Execution. In versions later than 1.2.2, this can result in Denial of Service, since the web space can be filled up with arbitrary files.",
  "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" : "slub/slub-events"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-16700"
  }, {
    "type" : "WEB",
    "url" : "https://extensions.typo3.org/extension/slub_events"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-ext-sa-2019-017"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-01T22:40:15Z",
    "nvd_published_at" : "2019-10-16T19:15:00Z"
  }
}