Authentication Bypass in FortiClient EMS by Fortinet
CVE-2021-41030

5.4MEDIUM

Key Information:

Vendor

Fortinet
Status
Fortinet Forticlientems
Vendor
CVE Published:
8 December 2021

What is CVE-2021-41030?

An authentication bypass vulnerability exists in FortiClient EMS versions 7.0.1 and below and 6.4.4 and below, which could be exploited by an unauthenticated attacker. This flaw allows the attacker to impersonate existing users by intercepting and reusing valid SAML authentication messages, effectively bypassing authentication mechanisms and posing a significant risk to the security of the affected systems.

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Affected Version(s)

Fortinet FortiClientEMS FortiClientEMS 7.0.1, 7.0.0, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0

References

https://fortiguard.com/advisory/FG-IR-21-192
x_refsource_CONFIRM

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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