GHSA-M9HP-7R99-94H5

Vulnerability from github – Published: 2021-12-20 17:53 – Updated: 2021-05-21 20:49
VLAI?
Summary
Critical security issues in XML encoding in github.com/dexidp/dex
Details

Impact

The following vulnerabilities have been disclosed, which impact users leveraging the SAML connector:

Signature Validation Bypass (CVE-2020-15216): https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7

encoding/xml instabilities: - Element namespace prefix instability (CVE-2020-29511) - Attribute namespace prefix instability (CVE-2020-29509) - Directive comment instability (CVE-2020-29510)

Patches

Immediately update to Dex v2.27.0.

Workarounds

There are no known workarounds.

Severity ?
9.3 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/dexidp/dex"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.27.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/russellhaering/goxmldsig"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-26290"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-21T20:49:36Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nThe following vulnerabilities have been disclosed, which impact users leveraging the SAML connector:\n\nSignature Validation Bypass (CVE-2020-15216): https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7\n\n`encoding/xml` instabilities:\n - [Element namespace prefix instability (CVE-2020-29511)](https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md)\n - [Attribute namespace prefix instability (CVE-2020-29509)](https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md)\n - [Directive comment instability (CVE-2020-29510)](https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md)\n\n### Patches\n\nImmediately update to [Dex v2.27.0](https://github.com/dexidp/dex/releases/tag/v2.27.0).\n\n### Workarounds\n\nThere are no known workarounds.",
  "id": "GHSA-m9hp-7r99-94h5",
  "modified": "2021-05-21T20:49:36Z",
  "published": "2021-12-20T17:53:53Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26290"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/russellhaering/goxmldsig/commit/f6188febf0c29d7ffe26a0436212b19cb9615e64"
    },
    {
      "type": "WEB",
      "url": "https://github.com/dexidp/dex/releases/tag/v2.27.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2020-0050"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Critical security issues in XML encoding in github.com/dexidp/dex"
}


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  • 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.
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  • 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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