Vulnerability-Lookup

GSD-2021-20220

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

Aliases

CVE-2021-20220

Aliases

CVE-2021-20220

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-20220",
    "description": "A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.",
    "id": "GSD-2021-20220",
    "references": [
      "https://access.redhat.com/errata/RHSA-2021:2755",
      "https://access.redhat.com/errata/RHSA-2021:2210",
      "https://access.redhat.com/errata/RHSA-2021:0974",
      "https://access.redhat.com/errata/RHSA-2021:0885",
      "https://access.redhat.com/errata/RHSA-2021:0874",
      "https://access.redhat.com/errata/RHSA-2021:0873",
      "https://access.redhat.com/errata/RHSA-2021:0872"
    ]
  },
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      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
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            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
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            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
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          "obtainUserPrivilege": false,
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      "lastModifiedDate": "2022-02-22T14:53Z",
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}

CVE-2021-20220 (GCVE-0-2021-20220)

Vulnerability from cvelistv5 – Published: 2021-02-23 17:21 – Updated: 2024-08-03 17:30

Summary

Severity

No CVSS data available.

CWE

CWE-444

Assigner

redhat redhat root

References

2 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1923133	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2022021…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
n/a	undertow	Affected: Undertow 2.2.0.Final, Undertow 2.1.6.Final, Undertow 2.0.34.Final

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.