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CVE-2021-29467— Self-XSS

Quick assessment

Affected
birb-digital wrongthink
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.

Parabirb wrongthink是 （Parabirb）开源的一个应用程序。提供一个端到端加密功能。 Wrongthink 2.4.1版本存在安全漏洞，该漏洞允许用户可以将自己的指纹输入到该服务中，并输入一个脚本在站点上运行任意JavaScript。

CVSS 6.1 · Medium EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-29467

Vulnerability Information
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Vulnerability Title
Self-XSS
Source: CVE Program / CVE List V5
Vulnerability Description
Wrongthink is an encrypted peer-to-peer chat program. A user could check their fingerprint into the service and enter a script to run arbitrary JavaScript on the site. No workarounds exist, but a patch exists in version 2.4.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Parabirb wrongthink 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Parabirb wrongthink是 （Parabirb）开源的一个应用程序。提供一个端到端加密功能。 Wrongthink 2.4.1版本存在安全漏洞，该漏洞允许用户可以将自己的指纹输入到该服务中，并输入一个脚本在站点上运行任意JavaScript。
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
birb-digital wrongthink < 2.4.1 -

II. Public POCs for CVE-2021-29467

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III. Intelligence Information for CVE-2021-29467

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Vendor Advisories for CVE-2021-29467 (1)

IV. Related Vulnerabilities

Same product: wrongthink
Same weakness: CWE-80

V. Comments for CVE-2021-29467

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