Insufficient Session Expiration in FortiClientEMS by Fortinet
CVE-2021-24019

8.1HIGH

Key Information:

Vendor
Fortinet
Status
Fortinet Forticlientems
Vendor
CVE Published:
6 October 2021

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 15%

Summary

FortiClientEMS versions 6.4.2 and below, as well as 6.2.8 and below, are affected by an insufficient session expiration vulnerability. This issue allows attackers to exploit unexpired session IDs of admin users, potentially granting them unauthorized administrative access. If an attacker can obtain these session IDs through various means, they may be able to reuse them, circumventing normal authentication mechanisms and gaining elevated privileges. Organizations using affected versions should take immediate action to update their systems to mitigate this risk.

Affected Version(s)

Fortinet FortiClientEMS FortiClientEMS 6.4.2, 6.4.1, 6.4.0, 6.2.8, 6.2.7, 6.2.6, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-24019
Created by cnetsec

References

https://fortiguard.com/advisory/FG-IR-20-072
x_refsource_CONFIRM

EPSS Score

15% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.