CVE-2021-41282
Quick assessment
Affected
n/a n/a
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
pfSense是一套基于FreeBSD Linux的网络防火墙。 pfSense 存在注入漏洞，攻击者可利用该漏洞通过diag_routes.php来运行代码。
Public Exploits 2
Metasploit · 1
pfsense_diag_routes_webshell.rb [exploit]
Nuclei · 1
CVE-2021-41282.yaml [template]
Possible ATT&CK Techniques 3 AI
T1053 · Scheduled Task/Job T1543 · Create or Modify System Process T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-41282
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
pfSense 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pfSense是一套基于FreeBSD Linux的网络防火墙。 pfSense 存在注入漏洞，攻击者可利用该漏洞通过diag_routes.php来运行代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Shenlong Deep Dive — AI Deep Analysis
10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2021-41282
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | 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 (e.g., 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. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-41282.yaml | POC Details |
AI-Generated POC
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Other References for CVE-2021-41282 (3)
-
https://www.shielder.it/advisories/ x_refsource_MISC
-
https://www.shielder.it/advisories/pfsense-remote-command-execution/ x_refsource_MISC
-
https://docs.netgate.com/pfsense/en/latest/releases/22-01_2-6-0.html x_refsource_MISC
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IV. Related Vulnerabilities
V. Comments for CVE-2021-41282
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