Vulnerability Details : CVE-2021-46398
Potential exploit
A Cross-Site Request Forgery vulnerability exists in Filebrowser < 2.18.0 that allows attackers to create a backdoor user with admin privilege and get access to the filesystem via a malicious HTML webpage that is sent to the victim. An admin can run commands using the FileBrowser and hence it leads to RCE.
Vulnerability category: Cross-site request forgery (CSRF)
Products affected by CVE-2021-46398
- cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-46398
9.25%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 92 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-46398
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-46398
-
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-46398
-
https://github.com/filebrowser/filebrowser/commit/74b7cd8e81840537a8206317344f118093153e8d
fix: security issue in command runner (closes #1621) · filebrowser/filebrowser@74b7cd8 · GitHubPatch;Third Party Advisory
-
https://febin0x4e4a.wordpress.com/2022/01/19/critical-csrf-in-filebrowser/
Critical CSRF in FileBrowser | febiNJExploit;Third Party Advisory
-
https://systemweakness.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7
CVE-2021–46398 Critical CSRF to RCE in FileBrowser | by Febin | Jan, 2022 | System WeaknessExploit;Third Party Advisory
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https://febin0x4e4a.blogspot.com/2022/01/critical-csrf-in-filebrowser.html
Critical CSRF in FileBrowserExploit;Third Party Advisory
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https://febinj.medium.com/critical-csrf-to-rce-in-filebrowser-865a3c34b8e7
CVE-2021–46398 Critical CSRF to RCE in FileBrowser | by Febin | Jan, 2022 | System WeaknessExploit;Third Party Advisory
-
http://packetstormsecurity.com/files/165885/FileBrowser-2.17.2-Code-Execution-Cross-Site-Request-Forgery.html
FileBrowser 2.17.2 Code Execution / Cross Site Request Forgery ≈ Packet StormExploit;Third Party Advisory;VDB Entry
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