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CVE-2021-43788— Path traversal in translator module of NobeBB

Quick assessment

Affected
NodeBB NodeBB
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NodeBB是Design Create Play团队的一套使用Node.js（一套建立在Google V8 JavaScript引擎之上的网络应用平台）构建的论坛系统。 Nodebb 存在路径遍历漏洞，该漏洞源于在v1.18.5之前，存在一个路径遍历漏洞，允许用户访问预期的“languages”目录之外的JSON文件。攻击者可利用该漏洞访问受限目录之外的位置。

CVSS 5.0 · Medium EPSS 25.84% · P98

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2021-43788

Vulnerability Information
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Vulnerability Title
Path traversal in translator module of NobeBB
Source: CVE Program / CVE List V5
Vulnerability Description
Nodebb is an open source Node.js based forum software. Prior to v1.18.5, a path traversal vulnerability was present that allowed users to access JSON files outside of the expected `languages/` directory. The vulnerability has been patched as of v1.18.5. Users are advised to upgrade as soon as possible.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
NodeBB 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NodeBB是Design Create Play团队的一套使用Node.js（一套建立在Google V8 JavaScript引擎之上的网络应用平台）构建的论坛系统。 Nodebb 存在路径遍历漏洞，该漏洞源于在v1.18.5之前，存在一个路径遍历漏洞，允许用户访问预期的“languages”目录之外的JSON文件。攻击者可利用该漏洞访问受限目录之外的位置。
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
NodeBB NodeBB >= 1.0.4, < 1.18.5 -

II. Public POCs for CVE-2021-43788

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III. Intelligence Information for CVE-2021-43788

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Patches & Fixes for CVE-2021-43788 (1)

Vendor Advisories for CVE-2021-43788 (1)

Security Blog Posts for CVE-2021-43788 (1)

Other References for CVE-2021-43788 (1)

Same Patch Batch · NodeBB · 2021-11-29 · 3 CVEs total

CVE-2021-43786 9.8 CRITICAL API token verification can be bypassed
CVE-2021-43787 9.0 CRITICAL XSS via prototype pollution

IV. Related Vulnerabilities

Same product: NodeBB
Same vendor: NodeBB
Same weakness: CWE-22

V. Comments for CVE-2021-43788

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