CVE-2021-45079

In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP…

published January 31, 2022

CVSS
—
EPSS
3%
Percentile
86.3
In the wild
Unconfirmed
What it is

⚠️ A crafty EAP-Success message can open the door too soon! In strongSwan versions before 5.9.5, an attacker could trick the client into thinking they’re authenticated without any real identity verification. 🔥 Think of it like a bouncer letting someone into a club just because they waved at the door—no ID check required! It's an invitation to the party that shouldn’t be happening without proper validation. This means that an attacker could potentially bypass authentication, making it easier for them to exploit the network. If they successfully trick the system, it could lead to unauthorized access and sensitive data exposure—definitely not something you want happening at your digital club!

Put simply

Think of it like a bouncer letting someone into a club just because they waved at the door—no ID check required! It's an invitation to the party that shouldn’t be happening without proper validation. The vulnerability allows a malicious responder to prematurely send an EAP-Success message, allowing clients to believe they are authenticated without proper checks, including server authentication in some cases.

What to do

This means that an attacker could potentially bypass authentication, making it easier for them to exploit the network. If they successfully trick the system, it could lead to unauthorized access and sensitive data exposure—definitely not something you want happening at your digital club! Upgrade strongSwan to version 5.9.5 or later to close this loophole. Additionally, review your authentication processes to ensure robust checks are in place. Regular audits and updates can help maintain your security posture. You've got this! By updating your systems, you’ll ensure your digital doors stay locked tight. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02784 · 86.3th percentile
Published
2022-01-31T07:15Z
EPSS history
Timeline
  • 31 JAN 07:15Z
    In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP…
    cvelistv5