PT-2021-23942 · Wiki.Js · Wiki.Js

Braidon · Published 2021-12-06 · Updated 2021-12-08 · CVE-2021-43800

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: Wiki.js versions prior to 2.5.254

Description: The issue allows directory traversal outside of the Wiki.js context when a storage module with local asset cache fetching is enabled on a Windows host. 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 on a Wiki.js server running on Windows, when a storage module implementing local asset cache is enabled and no web application firewall solution strips potentially malicious URLs.

Recommendations: For versions prior to 2.5.254, update to version 2.5.254 or later, which includes a fix that sanitizes the path before it is passed on to the storage module, removing any Windows directory traversal sequences. As a temporary workaround, consider disabling any storage module with local asset caching capabilities, such as Local File System or Git, until the update is applied.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-43800

GHSA-R363-73GJ-6J25

Affected Products

Wiki.Js

References · 6

• https://github.com/Requarks/wiki/security/advisories/GHSA-r363-73gj-6j25 · Patch
• https://github.com/Requarks/wiki/commit/414033de9dff66a327e3f3243234852f468a9d85 · Patch
• https://osv.dev/vulnerability/CVE-2021-43800 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43800 · Security Note
• https://github.com/Requarks/wiki/releases/tag/2.5.254 · Note
• https://t.me/cibsecurity/33406 · Telegram Post