Vulnerability identifier: #VU59994
Vulnerability risk: High
CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-371
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
strongSwan
Server applications /
Encryption software
Vendor: strongswan.org
Description
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to improper handling of EAP-Success messages. A remote attacker can send a specially crafted (early) EAP-Success message to the affected system and bypass authentication or perform a denial of service attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
strongSwan: 4.1.2 - 5.9.4
External links
http://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-(cve-2021-45079).html
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.