Vulnerability-Lookup

GHSA-2X32-JM95-2CPX

Vulnerability from github – Published: 2021-12-20 17:52 – Updated: 2021-06-01 17:58

Summary

Authentication Bypass in dex

Details

A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.

Severity

9.8 (Critical)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/dexidp/dex"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.27.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-27847"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-228",
      "CWE-290"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-06-01T17:58:22Z",
    "nvd_published_at": "2021-05-28T11:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.",
  "id": "GHSA-2x32-jm95-2cpx",
  "modified": "2021-06-01T17:58:22Z",
  "published": "2021-12-20T17:52:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27847"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1907732"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Authentication Bypass in dex"
}

CVE-2020-27847 (GCVE-0-2020-27847)

Vulnerability from cvelistv5 – Published: 2021-05-28 10:20 – Updated: 2024-08-04 16:25

Summary

Severity

No CVSS data available.

CWE

CWE-228 - >CWE-290

Assigner

redhat CNA under the redhat root

CNA scorecard B 81/100 over 1014 records in the last 180 days details

References

3 references

URL	Tags
https://mattermost.com/blog/coordinated-disclosur…	x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=1907732	x_refsource_MISC
https://github.com/dexidp/dex/security/advisories…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	dexidp/dex	Affected: dex 2.27.0

Show details on NVD website

JSON

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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.

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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.

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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.

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