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)
{
"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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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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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.
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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