Vulnerability · Published Jun 21, 2021 · Assigned by GitHub_M
CVE-2021-32697Form validation can be skipped
Medium 6.5
In plain English
A medium-severity improper input validation in form from neos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
neos/forms is an open source framework to build web forms. By crafting a special `GET` request containing a valid form state, a form can be submitted without invoking any validators. 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. 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. This regression was introduced with https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | neos/form | 4.3.3 | GHSA-m5vx-8chx-qvmm |
| Packagist | neos/form | 5.0.9 | GHSA-m5vx-8chx-qvmm |
| Packagist | neos/form | 5.1.3 | GHSA-m5vx-8chx-qvmm |
Affected products (as reported)
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
References
- https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm x_refsource_CONFIRM
- https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1 x_refsource_MISC
- https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567 x_refsource_MISC
- https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246 x_refsource_MISC
- https://github.com/neos/form/releases/tag/5.1.3 x_refsource_MISC