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CVE-2021-39206— Incorrect Authorization with specially crafted requests

Quick assessment

Affected
pomerium pomerium
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Caleb Doxsey pomerium是Caleb Doxsey开源的一个应用程序。一种身份识别代理，可以安全地访问内部应用程序。 Pomerium 存在安全漏洞，该漏洞源于对于经过特殊设计的请求，Pomerium可能会做出错误的授权或路由决策。

CVSS 8.6 · High EPSS 1.46% · P71

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-39206

Vulnerability Information
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Vulnerability Title
Incorrect Authorization with specially crafted requests
Source: CVE Program / CVE List V5
Vulnerability Description
Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, contains two authorization related vulnerabilities CVE-2021-32777 and CVE-2021-32779. This may lead to incorrect routing or authorization policy decisions. With specially crafted requests, incorrect authorization or routing decisions may be made by Pomerium. Pomerium v0.14.8 and v0.15.1 contain an upgraded envoy binary with these vulnerabilities patched. This issue can only be triggered when using path prefix based policy. Removing any such policies should provide mitigation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Caleb Doxsey pomerium 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Caleb Doxsey pomerium是Caleb Doxsey开源的一个应用程序。一种身份识别代理，可以安全地访问内部应用程序。 Pomerium 存在安全漏洞，该漏洞源于对于经过特殊设计的请求，Pomerium可能会做出错误的授权或路由决策。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pomerium pomerium >= 0.11.0, < 0.14.8 -

II. Public POCs for CVE-2021-39206

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III. Intelligence Information for CVE-2021-39206

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Vendor Advisories for CVE-2021-39206 (3)

Other References for CVE-2021-39206 (1)

Same Patch Batch · pomerium · 2021-09-09 · 3 CVEs total

CVE-2021-39162 8.6 HIGH Incorrect handling of H2 GOAWAY + SETTINGS frames
CVE-2021-39204 7.5 HIGH Excessive CPU usage in Pomerium

IV. Related Vulnerabilities

Same product: pomerium
Same vendor: pomerium
Same weakness: CWE-863

V. Comments for CVE-2021-39206

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