CVE-2021-45079
Published: 24 January 2022
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 methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
strongswan Launchpad, Ubuntu, Debian |
bionic |
Released
(5.6.2-1ubuntu2.8)
|
| focal |
Released
(5.8.2-1ubuntu3.4)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Released
(5.9.1-1ubuntu3.2)
|
|
| jammy |
Released
(5.9.4-1ubuntu4)
|
|
| kinetic |
Released
(5.9.4-1ubuntu4)
|
|
| lunar |
Released
(5.9.4-1ubuntu4)
|
|
| mantic |
Released
(5.9.4-1ubuntu4)
|
|
| noble |
Released
(5.9.4-1ubuntu4)
|
|
| trusty |
Released
(5.1.2-0ubuntu2.11+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(5.9.5)
|
|
| xenial |
Released
(5.3.5-1ubuntu3.8+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.1 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
References
- https://github.com/strongswan/strongswan/releases/tag/5.9.5
- https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-(cve-2021-45079).html
- https://ubuntu.com/security/notices/USN-5250-1
- https://ubuntu.com/security/notices/USN-5250-2
- https://www.cve.org/CVERecord?id=CVE-2021-45079
- NVD
- Launchpad
- Debian