CVE-2021-24020
Quick assessment
Affected
Fortinet Fortinet FortiMail
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Fortinet FortiMail是美国飞塔（Fortinet）公司的一套电子邮件安全网关产品。该产品提供电子邮件安全防护和数据保护等功能。 Fortinet FortiMail存在数据伪造问题漏洞，该漏洞源于FortiMail 中散列摘要算法实施中缺少加密步骤。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-24020
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Fortinet FortiMail 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fortinet FortiMail是美国飞塔（Fortinet）公司的一套电子邮件安全网关产品。该产品提供电子邮件安全防护和数据保护等功能。 Fortinet FortiMail存在数据伪造问题漏洞，该漏洞源于FortiMail 中散列摘要算法实施中缺少加密步骤。
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)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Fortinet | Fortinet FortiMail | FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 | - |
|
II. Public POCs for CVE-2021-24020
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-24020 (1)
-
https://fortiguard.com/advisory/FG-IR-21-027 x_refsource_CONFIRM
Same Patch Batch · Fortinet · 2021-07-09 · 6 CVEs total
| CVE-2021-24007 | 9.8 CRITICAL | Fortinet FortiMail SQL注入漏洞 |
| CVE-2021-22129 | 8.8 HIGH | Fortinet FortiMail 缓冲区错误漏洞 |
| CVE-2021-26106 | 7.8 HIGH | Fortinet FortiAP 操作系统命令注入漏洞 |
| CVE-2020-29014 | 6.3 MEDIUM | Fortinet FortiSandbox 竞争条件问题漏洞 |
| CVE-2021-26100 | 5.9 MEDIUM | Fortinet FortiMail 数据伪造问题漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-24020
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