EAP Authentication Vulnerability in strongSwan by strongSwan
CVE-2021-45079

9.1CRITICAL

Key Information:

Vendor

Strongswan

Status
Strongswan
Vendor
CVE Published:
31 January 2022

What is CVE-2021-45079?

In strongSwan versions prior to 5.9.5, a security flaw allows a malicious responder to send an EAP-Success message prematurely. This can occur without proper client authentication and, in cases involving mutual authentication or EAP-only authentication for IKEv2, even without server authentication. This critical weakness could enable unauthorized access to network resources, posing significant risks to the integrity and confidentiality of secure communications.

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References

https://www.strongswan.org/blog/2022/01/24/strongswan-vul...
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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