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.

CVSS v3.0 9.1 CRITICAL
CVSS v2.0 5.8 MEDIUM

9.1^/10

CVSS v3.0 : CRITICAL

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

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-(cve-2021-45079).html	Mitigation Vendor Advisory

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

Configuration 4 (hide)

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

Information

Published : 2022-01-31 08:15

Updated : 2022-07-12 17:42

NVD link : CVE-2021-45079

Mitre link : CVE-2021-45079

JSON object : View

Products Affected

canonical

ubuntu_linux

debian

debian_linux

fedoraproject

fedora
extra_packages_for_enterprise_linux

strongswan

strongswan

CWE

CWE-476

NULL Pointer Dereference

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