CVE-2021-21298

26.02.2021, 17:15

Node-Red is a low-code programming for event-driven applications built using nodejs. Node-RED 1.2.7 and earlier has a vulnerability which allows arbitrary path traversal via the Projects API. If the Projects feature is enabled, a user with `projects.read` permission is able to access any file via the Projects API. The issue has been patched in Node-RED 1.2.8. The vulnerability applies only to the Projects feature which is not enabled by default in Node-RED. The primary workaround is not give untrusted users read access to the Node-RED editor.

Path Traversal

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	3.5 LOW	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
GitHub_M	CNA	3.5 LOW	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 57%

Vendor	Product	Version
nodered	node-red	𝑥 < 1.2.8

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References

https://github.com/node-red/node-red/commit/74db3e17d075f23d9c95d7871586cf461524c456

https://github.com/node-red/node-red/releases/tag/1.2.8

https://github.com/node-red/node-red/security/advisories/GHSA-m33v-338h-4v9f

https://www.npmjs.com/package/%40node-red/runtime

https://github.com/node-red/node-red/commit/74db3e17d075f23d9c95d7871586cf461524c456

https://github.com/node-red/node-red/releases/tag/1.2.8

https://github.com/node-red/node-red/security/advisories/GHSA-m33v-338h-4v9f

https://www.npmjs.com/package/%40node-red/runtime