CVE-2021-41282

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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.shielder.it/advisories/pfsense-remote-command-execution/	Exploit Third Party Advisory
https://docs.netgate.com/pfsense/en/latest/releases/22-01_2-6-0.html	Release Notes Third Party Advisory
https://www.shielder.it/advisories/	Third Party Advisory
http://packetstormsecurity.com/files/166208/pfSense-2.5.2-Shell-Upload.html	Exploit Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

cpe:2.3:a:pfsense:pfsense:2.5.2:*:*:*:*:*:*:*

Information

Published : 2022-03-01 15:15

Updated : 2022-07-12 10:42

NVD link : CVE-2021-41282

Mitre link : CVE-2021-41282

JSON object : View

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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Products Affected

pfsense

pfsense

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