Vulnerability Details : CVE-2023-36822
Potential exploit
Uptime Kuma, a self-hosted monitoring tool, has a path traversal vulnerability in versions prior to 1.22.1. Uptime Kuma allows authenticated users to install plugins from an official list of plugins. This feature is currently disabled in the web interface, but the corresponding API endpoints are still available after login. Before a plugin is downloaded, the plugin installation directory is checked for existence. If it exists, it's removed before the plugin installation. Because the plugin is not validated against the official list of plugins or sanitized, the check for existence and the removal of the plugin installation directory are prone to path traversal. This vulnerability allows an authenticated attacker to delete files from the server Uptime Kuma is running on. Depending on which files are deleted, Uptime Kuma or the whole system may become unavailable due to data loss.
Vulnerability category: Directory traversal
Products affected by CVE-2023-36822
- cpe:2.3:a:uptime-kuma_project:uptime-kuma:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-36822
0.45%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 62 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-36822
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
2.8
|
5.2
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2023-36822
-
The product 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 product 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.Assigned by: security-advisories@github.com (Primary)
References for CVE-2023-36822
-
https://github.com/louislam/uptime-kuma/security/advisories/GHSA-vr8x-74pm-6vj7
Authenticated path traversal via plugin repository name leading to unavailability or data loss · Advisory · louislam/uptime-kuma · GitHubExploit;Vendor Advisory
-
https://github.com/louislam/uptime-kuma/releases/tag/1.22.1
Release 1.22.1 · louislam/uptime-kuma · GitHubRelease Notes
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https://github.com/louislam/uptime-kuma/pull/3346
Drop unused code by louislam · Pull Request #3346 · louislam/uptime-kuma · GitHubPatch
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https://github.com/louislam/uptime-kuma/blob/de74efb2e6601dcbcfed32cddefc4078a80fcb0b/server/plugins-manager.js#L75-L80
uptime-kuma/server/plugins-manager.js at de74efb2e6601dcbcfed32cddefc4078a80fcb0b · louislam/uptime-kuma · GitHubProduct
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