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CVE-2020-15236— Directory Traversal in Wiki.js

Quick assessment

Affected
Requarks wiki
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.

Wiki.js是Requarks.io团队的一套基于Node.js并使用JavaScript语言编写的开源Wiki软件。 Wiki.js 2.5.151之前版本存在安全漏洞，该漏洞源于当启用了带有本地资产缓存抓取的存储模块时，可以遍历Wiki.js上下文之外的目录。攻击者可利用该漏洞通过创建一个允许目录遍历的特殊URL来读取文件系统上的任何文件。

CVSS 8.6 · High EPSS 1.77% · P76

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2020-15236

Vulnerability Information
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Vulnerability Title
Directory Traversal in Wiki.js
Source: CVE Program / CVE List V5
Vulnerability Description
In Wiki.js before version 2.5.151, directory traversal outside of Wiki.js context is possible when a storage module with local asset cache fetching is enabled. A malicious user can potentially read any file on the file system by crafting a special URL that allows for directory traversal. This is only possible when a storage module implementing local asset cache (e.g Local File System or Git) is enabled and that no web application firewall solution (e.g. cloudflare) strips potentially malicious URLs. Commit 084dcd69d1591586ee4752101e675d5f0ac6dcdc fixes this vulnerability by sanitizing the path before it is passed on to the storage module. The sanitization step removes any directory traversal (e.g. `..` and `.`) sequences as well as invalid filesystem characters from the path. As a workaround, disable any storage module with local asset caching capabilities such as Local File System and Git.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/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
Wiki.js 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wiki.js是Requarks.io团队的一套基于Node.js并使用JavaScript语言编写的开源Wiki软件。 Wiki.js 2.5.151之前版本存在安全漏洞，该漏洞源于当启用了带有本地资产缓存抓取的存储模块时，可以遍历Wiki.js上下文之外的目录。攻击者可利用该漏洞通过创建一个允许目录遍历的特殊URL来读取文件系统上的任何文件。
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
Requarks wiki >= 2.5.80, < 2.5.151 -

II. Public POCs for CVE-2020-15236

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III. Intelligence Information for CVE-2020-15236

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Patches & Fixes for CVE-2020-15236 (1)

Vendor Advisories for CVE-2020-15236 (1)

IV. Related Vulnerabilities

Same product: wiki
Same vendor: Requarks
Same weakness: CWE-22

V. Comments for CVE-2020-15236

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