SB2021120403 - Path traversal in Wiki.js

Description

This security bulletin contains information about 1 vulnerability.

1) Path traversal (CVE-ID: CVE-2021-43800)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to path traversal in asset cache fetching with storage modules implementing local asset cache when handling a specially crafted URL on Windows. A remote user can send a specially crafted URL to disclose sensitive information.

This is only possible on Windows hosts when a storage module implementing local asset cache is enabled, such as Local File System or Git, and no web application firewall strips malicious URLs.

Remediation

Install update from vendor's website.

References

• https://github.com/requarks/wiki/security/advisories/GHSA-r363-73gj-6j25
• https://github.com/advisories/GHSA-r363-73gj-6j25