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CVE-2021-32624— Private Field data leak

Quick assessment

Affected
keystonejs keystone-5
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.

Keystone-5是开源的一个可扩展的平台。用于快速创建高度自定义的CMS和API。是对KeystoneJS未来的完整重新构想。 Keystone-5 存在信息泄露漏洞，该漏洞可以直接或间接公开私有字段的值，绕过配置的访问控制。这是一种访问控制相关的oracle攻击，攻击者可利用该漏洞试图访问没有访问权限的信息。

CVSS 7.5 · High EPSS 0.86% · P55

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2021-32624

Vulnerability Information
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Vulnerability Title
Private Field data leak
Source: CVE Program / CVE List V5
Vulnerability Description
Keystone 5 is an open source CMS platform to build Node.js applications. This security advisory relates to a newly discovered capability in our query infrastructure to directly or indirectly expose the values of private fields, bypassing the configured access control. This is an access control related oracle attack in that the attack method guides an attacker during their attempt to reveal information they do not have access to. The complexity of completing the attack is limited by some length-dependent behaviors and the fidelity of the exposed information. Under some circumstances, field values or field value meta data can be determined, despite the field or list having `read` access control configured. If you use private fields or lists, you may be impacted. No patches exist at this time. There are no workarounds at this time
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Keystone-5 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Keystone-5是开源的一个可扩展的平台。用于快速创建高度自定义的CMS和API。是对KeystoneJS未来的完整重新构想。 Keystone-5 存在信息泄露漏洞，该漏洞可以直接或间接公开私有字段的值，绕过配置的访问控制。这是一种访问控制相关的oracle攻击，攻击者可利用该漏洞试图访问没有访问权限的信息。
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
keystonejs keystone-5 <= 19.3.2 -

II. Public POCs for CVE-2021-32624

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III. Intelligence Information for CVE-2021-32624

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Vendor Advisories for CVE-2021-32624 (1)

IV. Related Vulnerabilities

Same vendor: keystonejs
Same weakness: CWE-200

V. Comments for CVE-2021-32624

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