GHSA-m5vx-8chx-qvmm

Suggest an improvement
Source
https://github.com/advisories/GHSA-m5vx-8chx-qvmm
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/06/GHSA-m5vx-8chx-qvmm/GHSA-m5vx-8chx-qvmm.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-m5vx-8chx-qvmm
Aliases
Published
2021-06-22T15:15:08Z
Modified
2024-02-16T08:22:59.843815Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
Form validation can be skipped
Details

Impact

By crafting a special GET request containing a valid form state, a form can be submitted without invoking any validators. We consider the severity low because it is not possible to change any form values since the form state is secured with an HMAC that is still verified. That means that this issue can only be exploited if Form Finishers cause side effects even if no form values have been sent.

Patches

https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246

Workarounds

Form Finishers can be adjusted in a way that they only execute an action if the submitted form contains some expected data. Alternatively a custom Finisher can be added as first finisher.

References

This regression was introduced with https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567 Original report: https://tickets.neos.io/#ticket/zoom/411 (internal)

Database specific 
{
    "nvd_published_at": "2021-06-21T19:15:00Z",
    "cwe_ids": [
        "CWE-20"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-06-21T17:39:52Z"
}
References

Affected packages

Packagist / neos/form

Package

Name
neos/form
Purl
pkg:composer/neos/form

Affected ranges

Type
ECOSYSTEM
Events
Introduced
1.2.0
Fixed
4.3.3

Affected versions

1.*

1.2.0
1.2.1
1.2.2
1.2.3

2.*

2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5

3.*

3.0.0

4.*

4.0.0
4.0.1
4.0.2
4.0.3
4.1.0
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.2.0
4.2.1
4.2.2
4.2.3
4.3.0
4.3.1
4.3.2

Packagist / neos/form

Package

Name
neos/form
Purl
pkg:composer/neos/form

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.0.0
Fixed
5.0.9

Affected versions

5.*

5.0.0
5.0.1
5.0.2
5.0.3
5.0.4
5.0.5
5.0.6
5.0.7
5.0.8

Packagist / neos/form

Package

Name
neos/form
Purl
pkg:composer/neos/form

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.1.0
Fixed
5.1.3

Affected versions

5.*

5.1.0
5.1.1
5.1.2