This security advisory describes one medium risk vulnerability.

1) Path traversal

Risk: Medium

CVSSv3:
5.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID:
N/A

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

Exploit availability:
No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary .md files on the system.

Mitigation

Install update from vendor’s website.

Vulnerable software versions

zenn-cli:

0.0.5, 0.0.6, 0.0.7, 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7, 0.1.8, 0.1.9, 0.1.10, 0.1.11, 0.1.12, 0.1.13, 0.1.14, 0.1.16, 0.1.17, 0.1.18, 0.1.19, 0.1.20, 0.1.21, 0.1.22, 0.1.23, 0.1.25, 0.1.26, 0.1.27, 0.1.28, 0.1.29, 0.1.30, 0.1.31, 0.1.32, 0.1.33, 0.1.34, 0.1.35, 0.1.36, 0.1.37, 0.1.38, 0.1.39

CPE

External links

https://snyk.io/vuln/SNYK-JS-ZENNCLI-1024443
https://github.com/zenn-dev/zenn-editor/commit/eb9e67b39f93f8fbe79c5e4ce3c333936c79cff4
https://hackerone.com/reports/993975

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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