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CVE-2021-42357— DOM based XSS Vulnerability in Apache Knox

Quick assessment

Affected
Apache Software Foundation Apache Knox
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.

Knox Sso是美国阿帕奇（Apache）基金会的用于为您的集群提供 Web Ui Sso（单点登录）功能。 Apache Knox SSO 存在安全漏洞，该漏洞源于 URL 解析不正确，可能会制作请求以将用户重定向到恶意页面。 包含特制请求参数的请求可用于将用户重定向到攻击者控制的页面。 此 URL 需要通过 XSS 或网络钓鱼活动在正常请求流之外呈现给用户。

AI Predicted 6.5 Difficulty: Easy EPSS 2.58% · P84

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-42357

Vulnerability Information
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Vulnerability Title
DOM based XSS Vulnerability in Apache Knox
Source: CVE Program / CVE List V5
Vulnerability Description
When using Apache Knox SSO prior to 1.6.1, a request could be crafted to redirect a user to a malicious page due to improper URL parsing. A request that included a specially crafted request parameter could be used to redirect the user to a page controlled by an attacker. This URL would need to be presented to the user outside the normal request flow through a XSS or phishing campaign.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Knox SSO 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Knox Sso是美国阿帕奇（Apache）基金会的用于为您的集群提供 Web Ui Sso（单点登录）功能。 Apache Knox SSO 存在安全漏洞，该漏洞源于 URL 解析不正确，可能会制作请求以将用户重定向到恶意页面。 包含特制请求参数的请求可用于将用户重定向到攻击者控制的页面。 此 URL 需要通过 XSS 或网络钓鱼活动在正常请求流之外呈现给用户。
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
Apache Software Foundation Apache Knox Apache Knox 1.x ~ 1.6.1 -

II. Public POCs for CVE-2021-42357

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III. Intelligence Information for CVE-2021-42357

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Mailing List Discussions for CVE-2021-42357 (2)

IV. Related Vulnerabilities

Same product: Apache Knox
Same vendor: Apache Software Foundation
Same weakness: CWE-79

V. Comments for CVE-2021-42357

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