// For flags

CVE-2021-24020

 

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

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.

Una falta de paso criptográfico en la implementación del algoritmo hash digest en FortiMail versiones 6.4.0 hasta 6.4.4, y versiones 6.2.0 hasta 6.2.7, puede permitir a un atacante no autenticado manipular las URLs firmadas al añadir más datos que permitan omitir la comprobación de la firma

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2021-01-13 CVE Reserved
  • 2021-07-09 CVE Published
  • 2024-04-07 EPSS Updated
  • 2024-10-25 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-347: Improper Verification of Cryptographic Signature
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://fortiguard.com/advisory/FG-IR-21-027 2022-07-12
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Fortinet
Search vendor "Fortinet"
 Fortimail
Search vendor "Fortinet" for product "Fortimail"
 >= 6.2.0 <= 6.2.7
Search vendor "Fortinet" for product "Fortimail" and version " >= 6.2.0 <= 6.2.7"
-
Affected
Fortinet
Search vendor "Fortinet"
 Fortimail
Search vendor "Fortinet" for product "Fortimail"
 >= 6.4.0 < 6.4.5
Search vendor "Fortinet" for product "Fortimail" and version " >= 6.4.0 < 6.4.5"
-
Affected