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cve[email protected]CVE-2021-32697
HistoryJun 21, 2021 - 7:15 p.m.

CVE-2021-32697

2021-06-2119:15:08
CWE-20
web.nvd.nist.gov
45
3
neos/forms
cve-2021-32697
security
web forms
open source
vulnerability
validation bypass
nvd

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

5.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.8%

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 configurations

Vulners
NVD
Node
neosformRange1.2.0–4.3.3
OR
neosformRange5.0.0–5.0.9
OR
neosformRange5.1.0–5.1.3
VendorProductVersionCPE
neosform*cpe:2.3:a:neos:form:*:*:*:*:*:*:*:*
neosform*cpe:2.3:a:neos:form:*:*:*:*:*:*:*:*
neosform*cpe:2.3:a:neos:form:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "form",
    "vendor": "neos",
    "versions": [
      {
        "status": "affected",
        "version": ">= 1.2.0, < 4.3.3"
      },
      {
        "status": "affected",
        "version": ">= 5.0.0, < 5.0.9"
      },
      {
        "status": "affected",
        "version": ">= 5.1.0, < 5.1.3"
      }
    ]
  }
]

Social References

More

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

5.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.8%