GHSA-xrvh-rvc4-5m43

Suggest an improvement
Source
https://github.com/advisories/GHSA-xrvh-rvc4-5m43
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/02/GHSA-xrvh-rvc4-5m43/GHSA-xrvh-rvc4-5m43.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-xrvh-rvc4-5m43
Aliases
Related
Published
2024-02-26T16:22:12Z
Modified
2024-02-26T17:56:54.723389Z
Severity
  • 4.6 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Kirby vulnerable to unrestricted file upload of user avatar images
Details

TL;DR

This vulnerability affects all Kirby sites that might have potential attackers in the group of authenticated Panel users.

The attack requires user interaction by another user or visitor and cannot be automated.

Introduction

Unrestricted upload of files with a dangerous type is a type of vulnerability that allows to circumvent expectations and protections in the server setup or backend code. Uploaded files are not checked for their compliance with the intended purpose of the upload target, which can introduce secondary attack vectors.

While the vulnerability described here does not allow critical attacks like remote code execution (RCE), it can still be abused to upload unexpected file types that could for example make it possible to perform cross-site scripting (XSS) attacks.

Impact

Users with Panel access can upload a user avatar in their own account view. This avatar is intended to be an image, however the file type or file extension was not validated on the backend. This effectively allowed to upload many types of files that would then be stored with the filename profile and the provided file extension.

While the upload is protected against dangerous file types such as HTML files or executable PHP files, this could be abused to upload unexpected files such as PDFs that would then be available via a direct link. These links could be shared to other users.

Patches

The problem has been patched in Kirby 3.6.6.5, Kirby 3.7.5.4, Kirby 3.8.4.3, Kirby 3.9.8.1, Kirby 3.10.0.1, and Kirby 4.1.1. Please update to one of these or a later version to fix the vulnerability.

In all of the mentioned releases, we have added validations that prevent any files that don't have an image file extension or MIME type from being uploaded as a user avatar.

Credits

Thanks to Natwara Archeepsamooth (@PlyNatwara) for responsibly reporting the identified issue.

Database specific 
{
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-79"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2024-02-26T16:22:12Z"
}
References

Affected packages

Packagist / getkirby/cms

Package

Name
getkirby/cms
Purl
pkg:composer/getkirby/cms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.6.5

Affected versions

3.*

3.0.0
3.0.1-rc.1
3.0.1
3.0.2-rc.1
3.0.2
3.0.3-rc.1
3.0.3-rc.2
3.0.3-rc.3
3.0.3
3.1.0-rc.1
3.1.0
3.1.1
3.1.2-rc.1
3.1.2
3.1.3-rc.1
3.1.3
3.1.4-rc.1
3.1.4
3.2.0-rc.1
3.2.0-rc.2
3.2.0-rc.3
3.2.0-rc.4
3.2.0
3.2.1-rc.1
3.2.1
3.2.2
3.2.3-rc.1
3.2.3
3.2.4-rc.1
3.2.4
3.2.5-rc.1
3.2.5-rc.2
3.2.5
3.3.0-rc.1
3.3.0-rc.2
3.3.0-rc.3
3.3.0-rc.4
3.3.0-rc.5
3.3.0
3.3.1-rc.1
3.3.1
3.3.2-rc.1
3.3.2
3.3.3-rc.1
3.3.3
3.3.4-rc.1
3.3.4
3.3.5-rc.1
3.3.5
3.3.6
3.4.0-rc.1
3.4.0-rc.2
3.4.0-rc.3
3.4.0
3.4.1-rc.1
3.4.1
3.4.2
3.4.3-rc.1
3.4.3
3.4.4-rc.1
3.4.4
3.4.5
3.5.0-rc.1
3.5.0-rc.2
3.5.0-rc.3
3.5.0-rc.4
3.5.0-rc.5
3.5.0-rc.6
3.5.0-rc.7
3.5.0
3.5.1-rc.1
3.5.1
3.5.2-rc.1
3.5.2
3.5.3
3.5.3.1
3.5.4
3.5.5-rc.1
3.5.5
3.5.6-rc.1
3.5.6
3.5.7-rc.1
3.5.7
3.5.7.1
3.5.8
3.5.8.1
3.5.8.2
3.5.8.3
3.5.8.4
3.6.0-alpha.1
3.6.0-alpha.2
3.6.0-alpha.3
3.6.0-alpha.4
3.6.0-beta.1
3.6.0-beta.2
3.6.0-beta.3
3.6.0-rc.1
3.6.0-rc.2
3.6.0-rc.3
3.6.0-rc.4
3.6.0-rc.5
3.6.0
3.6.1
3.6.1.1
3.6.2-rc.1
3.6.2-rc.2
3.6.2-rc.3
3.6.2
3.6.3-rc.1
3.6.3-rc.2
3.6.3
3.6.3.1
3.6.4-rc.1
3.6.4
3.6.5-rc.1
3.6.5
3.6.6-rc.1
3.6.6
3.6.6.1
3.6.6.2
3.6.6.3
3.6.6.4

Database specific 

{
    "last_known_affected_version_range": "<= 3.6.6.4"
}

Packagist / getkirby/cms

Package

Name
getkirby/cms
Purl
pkg:composer/getkirby/cms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.7.0
Fixed
3.7.5.4

Affected versions

3.*

3.7.0
3.7.0.1
3.7.0.2
3.7.1-rc.1
3.7.1
3.7.2-rc.1
3.7.2
3.7.2.1
3.7.3-rc.1
3.7.3
3.7.4-rc.1
3.7.4
3.7.5
3.7.5.1
3.7.5.2
3.7.5.3

Database specific 

{
    "last_known_affected_version_range": "<= 3.7.5.3"
}

Packagist / getkirby/cms

Package

Name
getkirby/cms
Purl
pkg:composer/getkirby/cms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.8.0
Fixed
3.8.4.3

Affected versions

3.*

3.8.0
3.8.1-rc.1
3.8.1
3.8.1.1
3.8.2-rc.1
3.8.2
3.8.3-rc.1
3.8.3-rc.2
3.8.3
3.8.4
3.8.4.1
3.8.4.2

Database specific 

{
    "last_known_affected_version_range": "<= 3.8.4.2"
}

Packagist / getkirby/cms

Package

Name
getkirby/cms
Purl
pkg:composer/getkirby/cms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.9.0
Fixed
3.9.8.1

Affected versions

3.*

3.9.0
3.9.1-rc.1
3.9.1
3.9.2-rc.1
3.9.2
3.9.3-rc.1
3.9.3
3.9.4-rc.1
3.9.4
3.9.5-rc.1
3.9.5
3.9.6-rc.1
3.9.6
3.9.6.1
3.9.7-rc.1
3.9.7
3.9.8-rc.1
3.9.8

Database specific 

{
    "last_known_affected_version_range": "<= 3.9.8"
}

Packagist / getkirby/cms

Package

Name
getkirby/cms
Purl
pkg:composer/getkirby/cms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.10.0
Fixed
3.10.0.1

Affected versions

3.*

3.10.0

Packagist / getkirby/cms

Package

Name
getkirby/cms
Purl
pkg:composer/getkirby/cms

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.0.0
Fixed
4.1.1

Affected versions

4.*

4.0.0
4.0.1
4.0.2
4.0.3
4.1.0-rc.1
4.1.0-rc.2
4.1.0-rc.3
4.1.0

Database specific 

{
    "last_known_affected_version_range": "<= 4.1.0"
}