CVE-2021-45079

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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 methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication.

9.1 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.8 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:P

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-%28cve-2021-45079%29.html
Configurations

Configuration 1 (hide)

cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*
History

07 Nov 2023, 03:39

Type Values Removed Values Added
References
  • {'url': 'https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-(cve-2021-45079).html', 'name': 'https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-(cve-2021-45079).html', 'tags': ['Mitigation', 'Vendor Advisory'], 'refsource': 'MISC'}
  • () https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-%28cve-2021-45079%29.html -

12 Jul 2022, 17:42

Type Values Removed Values Added
CWE CWE-287 CWE-476

14 Jun 2022, 14:38

Type Values Removed Values Added
CPE cpe:2.3:a:fedoraproject:fedora_extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*

07 Feb 2022, 17:57

Type Values Removed Values Added
First Time Debian debian Linux
Debian
Fedoraproject fedora Extra Packages For Enterprise Linux
Strongswan strongswan
Canonical ubuntu Linux
Fedoraproject fedora
Canonical
Strongswan
Fedoraproject extra Packages For Enterprise Linux
Fedoraproject
CPE cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:fedoraproject:fedora_extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 5.8
v3 : 9.1
References (MISC) https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-(cve-2021-45079).html - (MISC) https://www.strongswan.org/blog/2022/01/24/strongswan-vulnerability-(cve-2021-45079).html - Mitigation, Vendor Advisory
CWE CWE-287

31 Jan 2022, 08:15

Type Values Removed Values Added
New CVE
Information

Published : 2022-01-31 08:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-45079

Mitre link : CVE-2021-45079

CVE.ORG link : CVE-2021-45079

JSON object : View

Products Affected

debian

  • debian_linux

fedoraproject

  • extra_packages_for_enterprise_linux
  • fedora

strongswan

  • strongswan

canonical

  • ubuntu_linux
CWE
CWE-476

NULL Pointer Dereference