Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2024-03-06 11:00

Modified

2025-05-20 10:02

Summary

TLS Validation Vulnerability in Envoy

Details

In Envoy before versions 1.12.6, 1.13.4, 1.14.4, and 1.15.0 when validating TLS certificates, Envoy would incorrectly allow a wildcard DNS Subject Alternative Name apply to multiple subdomains. For example, with a SAN of .example.com, Envoy would incorrectly allow nested.subdomain.example.com, when it should only allow subdomain.example.com. This defect applies to both validating a client TLS certificate in mTLS, and validating a server TLS certificate for upstream connections. This vulnerability is only applicable to situations where an untrusted entity can obtain a signed wildcard TLS certificate for a domain of which you only intend to trust a subdomain of. For example, if you intend to trust api.mysubdomain.example.com, and an untrusted actor can obtain a signed TLS certificate for .example.com or *.com. Configurations are vulnerable if they use verify_subject_alt_name in any Envoy version, or if they use match_subject_alt_names in version 1.14 or later. This issue has been fixed in Envoy versions 1.12.6, 1.13.4, 1.14.4, 1.15.0.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "envoy",
        "purl": "pkg:bitnami/envoy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.6"
            },
            {
              "introduced": "1.13.0"
            },
            {
              "fixed": "1.13.4"
            },
            {
              "introduced": "1.14.0"
            },
            {
              "fixed": "1.14.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-15104"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*"
    ],
    "severity": "Medium"
  },
  "details": "In Envoy before versions 1.12.6, 1.13.4, 1.14.4, and 1.15.0 when validating TLS certificates, Envoy would incorrectly allow a wildcard DNS Subject Alternative Name apply to multiple subdomains. For example, with a SAN of *.example.com, Envoy would incorrectly allow nested.subdomain.example.com, when it should only allow subdomain.example.com. This defect applies to both validating a client TLS certificate in mTLS, and validating a server TLS certificate for upstream connections. This vulnerability is only applicable to situations where an untrusted entity can obtain a signed wildcard TLS certificate for a domain of which you only intend to trust a subdomain of. For example, if you intend to trust api.mysubdomain.example.com, and an untrusted actor can obtain a signed TLS certificate for *.example.com or *.com. Configurations are vulnerable if they use verify_subject_alt_name in any Envoy version, or if they use match_subject_alt_names in version 1.14 or later. This issue has been fixed in Envoy versions 1.12.6, 1.13.4, 1.14.4, 1.15.0.",
  "id": "BIT-envoy-2020-15104",
  "modified": "2025-05-20T10:02:07.006Z",
  "published": "2024-03-06T11:00:31.369Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-w5f5-6qhq-hhrg"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15104"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "TLS Validation Vulnerability in Envoy"
}

CVE-2020-15104 (GCVE-0-2020-15104)

Vulnerability from cvelistv5 – Published: 2020-07-14 22:05 – Updated: 2024-08-04 13:08

Title

TLS Validation Vulnerability in Envoy

Summary

In Envoy before versions 1.12.6, 1.13.4, 1.14.4, and 1.15.0 when validating TLS certificates, Envoy would incorrectly allow a wildcard DNS Subject Alternative Name apply to multiple subdomains. For example, with a SAN of *.example.com, Envoy would incorrectly allow nested.subdomain.example.com, when it should only allow subdomain.example.com. This defect applies to both validating a client TLS certificate in mTLS, and validating a server TLS certificate for upstream connections. This vulnerability is only applicable to situations where an untrusted entity can obtain a signed wildcard TLS certificate for a domain of which you only intend to trust a subdomain of. For example, if you intend to trust api.mysubdomain.example.com, and an untrusted actor can obtain a signed TLS certificate for *.example.com or *.com. Configurations are vulnerable if they use verify_subject_alt_name in any Envoy version, or if they use match_subject_alt_names in version 1.14 or later. This issue has been fixed in Envoy versions 1.12.6, 1.13.4, 1.14.4, 1.15.0.

Severity ?

4.6 (Medium)


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

CWE

CWE-346 - Origin Validation Error

Assigner

GitHub_M

References

URL

Tags

https://github.com/envoyproxy/envoy/security/advi…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	envoyproxy	envoy	Affected: < 1.12.6 Affected: >= 1.13.0, < 1.13.4 Affected: >= 1.14.0, < 1.14.4

Show details on NVD website

JSON

To clipboard

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          "vendor": "envoyproxy",
          "versions": [
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            },
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            },
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              "status": "affected",
              "version": "\u003e= 1.14.0, \u003c 1.14.4"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
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            "baseScore": 4.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
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      "problemTypes": [
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          "descriptions": [
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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        }
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      "source": {
        "advisory": "GHSA-w5f5-6qhq-hhrg",
        "discovery": "UNKNOWN"
      },
      "title": "TLS Validation Vulnerability in Envoy",
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
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                      "version": {
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                            "version_value": "\u003c 1.12.6"
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                          },
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}

Sightings

Author	Source	Type	Date

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.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2020-15104 (GCVE-0-2020-15104)

Tags

Sightings

Nomenclature