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CVE-2022-39222— OAuth authorization code exposure in Dex

Quick assessment

Affected
dexidp dex
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.

Dexidp Dex是Dexidp团队的一个基于Go语言用于通过OpenId来进行安全验证的软件。 Dex 2.35.0之前的版本存在安全漏洞，该漏洞源于其带有公共客户端的Dex实例（通过扩展，接受这些Dex实例发出的令牌的客户端）允许攻击者可让受害者导航到恶意网站，然后在他们通过OIDC流过程中窃取OAuth授权代码。最终，攻击者可以用授权代码交换令牌，从而获得对接受该令牌的应用程序的访问权。

CVSS 9.3 · Critical EPSS 1.58% · P75
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I. Basic Information for CVE-2022-39222

Vulnerability Information
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Vulnerability Title
OAuth authorization code exposure in Dex
Source: CVE Program / CVE List V5
Vulnerability Description
Dex is an identity service that uses OpenID Connect to drive authentication for other apps. Dex instances with public clients (and by extension, clients accepting tokens issued by those Dex instances) are affected by this vulnerability if they are running a version prior to 2.35.0. An attacker can exploit this vulnerability by making a victim navigate to a malicious website and guiding them through the OIDC flow, stealing the OAuth authorization code in the process. The authorization code then can be exchanged by the attacker for a token, gaining access to applications accepting that token. Version 2.35.0 has introduced a fix for this issue. Users are advised to upgrade. There are no known workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Dexidp Dex 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dexidp Dex是Dexidp团队的一个基于Go语言用于通过OpenId来进行安全验证的软件。 Dex 2.35.0之前的版本存在安全漏洞，该漏洞源于其带有公共客户端的Dex实例（通过扩展，接受这些Dex实例发出的令牌的客户端）允许攻击者可让受害者导航到恶意网站，然后在他们通过OIDC流过程中窃取OAuth授权代码。最终，攻击者可以用授权代码交换令牌，从而获得对接受该令牌的应用程序的访问权。
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
dexidp dex < 2.35.0 -

II. Public POCs for CVE-2022-39222

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III. Intelligence Information for CVE-2022-39222

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Patches & Fixes for CVE-2022-39222 (1)

Vendor Advisories for CVE-2022-39222 (1)

IV. Related Vulnerabilities

Same product: dex
Same vendor: dexidp
Same weakness: CWE-200

V. Comments for CVE-2022-39222

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