CVE-2021-32697
What it is
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
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 1.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.1% in the next 30 days (EPSS).
- Severity: 6.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.1% · EPSS, next 30 days
- Weakness
- CWE-20 · Improper input validation
- Record status
- Modified
Affected
- Neos Form < 4.3.3
- Neos Form < 5.0.9
- Neos Form < 5.1.3
Attack profile CVSS 3.1 · 6.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-32697.md and follow it. Check whether this project is affected by CVE-2021-32697. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1
- https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567
- https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246
- https://github.com/neos/form/releases/tag/5.1.3
- https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm
- https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1
- https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567
- https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246
- https://github.com/neos/form/releases/tag/5.1.3
- https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm
References
- https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1
- https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567
- https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246
- https://github.com/neos/form/releases/tag/5.1.3
- https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm
- https://github.com/neos/form-ghsa-m5vx-8chx-qvmm/pull/1
- https://github.com/neos/form/commit/049d415295be8d4a0478ccba97dba1bb81649567
- https://github.com/neos/form/commit/69de4219b1f58157e2be6b05811463875d75c246
- https://github.com/neos/form/releases/tag/5.1.3
- https://github.com/neos/form/security/advisories/GHSA-m5vx-8chx-qvmm