- Description
- 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.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "40CF9EE0-3EFC-4E23-9E96-6860686D68F9",
"versionEndExcluding": "1.12.6"
},
{
"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "03F35E43-8693-4A3F-BBCD-BF71498D5607",
"versionEndExcluding": "1.13.4",
"versionStartIncluding": "1.13.0"
},
{
"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B80A633C-5843-4229-A733-30C7B366AC57",
"versionEndExcluding": "1.14.4",
"versionStartIncluding": "1.14.0"
}
],
"operator": "OR"
}
]
}
]