cnvd - cnvd-2020-43168

CNVD-2020-43168

Vulnerability from cnvd - Published: 2020-07-24

Title

Envoy访问控制错误漏洞（CNVD-2020-43168）

Description

Envoy是一款开源的分布式代理服务器。 Envoy中存在访问控制错误漏洞。该漏洞源于网络系统或产品未正确限制来自未授权角色的资源访问。目前没有详细漏洞细节提供。

Severity

中

Patch Name

Envoy访问控制错误漏洞（CNVD-2020-43168）的补丁

Patch Description

Envoy是一款开源的分布式代理服务器。 Envoy中存在访问控制错误漏洞。该漏洞源于网络系统或产品未正确限制来自未授权角色的资源访问。目前没有详细漏洞细节提供。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/envoyproxy/envoy/security/advisories/GHSA-w5f5-6qhq-hhrg

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-15104

Impacted products

Name
['Envoy Envoy <1.12.6', 'Envoy Envoy <1.13.4', 'Envoy Envoy <1.14.4', 'Envoy Envoy <1.15.0']

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JSON

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    "cve": {
      "cveNumber": "CVE-2020-15104",
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  "number": "CNVD-2020-43168",
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  "products": {
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  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-15104",
  "serverity": "\u4e2d",
  "submitTime": "2020-07-20",
  "title": "Envoy\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2020-43168\uff09"
}

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

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

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

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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

CNVD-2020-43168

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

Tags

Sightings

Nomenclature