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GitHub_MCVE-2022-21657

HistoryFeb 22, 2022 - 11:15 p.m.

CVE-2022-21657

2022-02-2223:15:11

CWE-295

GitHub_M

web.nvd.nist.gov

112

cve

2022

21657

envoy

security

tls

certificate

vulnerability

upgrade.

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS3

6.8

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

6.5

Confidence

High

EPSS

0.001

Percentile

19.4%

JSON

Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions Envoy does not restrict the set of certificates it accepts from the peer, either as a TLS client or a TLS server, to only those certificates that contain the necessary extendedKeyUsage (id-kp-serverAuth and id-kp-clientAuth, respectively). This means that a peer may present an e-mail certificate (e.g. id-kp-emailProtection), either as a leaf certificate or as a CA in the chain, and it will be accepted for TLS. This is particularly bad when combined with the issue described in pull request #630, in that it allows a Web PKI CA that is intended only for use with S/MIME, and thus exempted from audit or supervision, to issue TLS certificates that will be accepted by Envoy. As a result Envoy will trust upstream certificates that should not be trusted. There are no known workarounds to this issue. Users are advised to upgrade.

Affected configurations

Nvd

Vulners

Node

envoyproxyenvoyRange<1.18.6

envoyproxyenvoyRange1.19.0–1.19.3

envoyproxyenvoyRange1.20.0–1.20.2

VendorProductVersionCPE
envoyproxyenvoy*cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
envoyproxy	envoy	*	cpe:2.3:a:envoyproxy:envoy::::::::

CNA Affected

[
  {
    "product": "envoy",
    "vendor": "envoyproxy",
    "versions": [
      {
        "status": "affected",
        "version": ">= 1.20.0, < 1.20.2"
      },
      {
        "status": "affected",
        "version": ">= 1.19.0, < 1.19.3"
      },
      {
        "status": "affected",
        "version": "< 1.18.6"
      }
    ]
  }
]

References

github.com/envoyproxy/envoy/pull/630

github.com/envoyproxy/envoy/security/advisories/GHSA-837m-wjrv-vm5g

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS3

6.8

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

6.5

Confidence

High

EPSS

0.001

Percentile

19.4%

JSON

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