Risk | High |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-45079 |
CWE-ID | CWE-371 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system strongswan (Ubuntu package) Operating systems & Components / Operating system package or component libstrongswan (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU59994
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: CVE-2021-45079
CWE-ID:
CWE-371 - State Issues
Exploit availability: No
DescriptionThe 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.
Update the affected package strongswan to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 16.04
strongswan (Ubuntu package): before 5.3.51u buntu3.8+esm2
libstrongswan (Ubuntu package): before 5.3.51u buntu3.8+esm2
External linkshttp://ubuntu.com/security/notices/USN-5250-2
Q & A
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.