CVE-2021-41282

 

Published at: - 02-03-2022 12:15

Last modified: - 09-03-2022 04:16

Total changes: - 4

Description

diag_routes.php in pfSense 2.5.2 allows sed data injection. Authenticated users are intended to be able to view data about the routes set in the firewall. The data is retrieved by executing the netstat utility, and then its output is parsed via the sed utility. Although the common protection mechanisms against command injection (i.e., the usage of the escapeshellarg function for the arguments) are used, it is still possible to inject sed-specific code and write an arbitrary file in an arbitrary location.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://www.shielder.it/advisories/pfsense-remote-command-execution/
• https://docs.netgate.com/pfsense/en/latest/releases/22-01_2-6-0.html
• https://www.shielder.it/advisories/
• http://packetstormsecurity.com/files/166208/pfSense-2.5.2-Shell-Upload.html

 

Keywords

NVD

 

CVE-2021-41282

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures