PT-2022-12301 · Unknown+4 · Strongswan+4

Zhuowei Zhang · Published 2022-01-24 · Updated 2024-06-15 · CVE-2021-45079

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions strongSwan versions prior to 5.9.5

Description A malicious responder can send an EAP-Success message too early without actually authenticating the client. This can occur even without server authentication in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2.

Recommendations For strongSwan versions prior to 5.9.5, update to version 5.9.5 or later to resolve the issue. As a temporary workaround, consider implementing additional authentication measures to verify the authenticity of EAP-Success messages. Restrict access to IKEv2 authentication to minimize the risk of exploitation.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2022-1584

ALT-PU-2022-2456

ALT-PU-2024-7917

AZL-8473

CVE-2021-45079

DLA-2909-1

DSA-5056-1

OESA-2022-1525

OESA-2022-2068

OPENSUSE-SU-2022:0492-1

OPENSUSE-SU-2022_0492-1

OPENSUSE-SU-2024:11808-1

ROSA-SA-2023-2274

SUSE-SU-2022:0202-1

SUSE-SU-2022:0211-1

SUSE-SU-2022:0492-1

SUSE-SU-2022:14887-1

SUSE-SU-2022_0202-1

SUSE-SU-2022_0211-1

SUSE-SU-2022_0492-1

USN-5250-1

USN-5250-2

Affected Products

Alt Linux

Linuxmint

Suse

Ubuntu

Strongswan

References · 43

• https://osv.dev/vulnerability/openSUSE-SU-2022:0492-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2022-1525 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5250-2 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11808-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-45079 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-45079 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-45079 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2022-2068 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-5056-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2021-45079 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-45079 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5250-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-45079 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-8473 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5250-2 · Vendor Advisory