Critical severity9.1NVD Advisory· Published Jan 31, 2022· Updated Jun 17, 2026
CVE-2021-45079
CVE-2021-45079
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
42(expand)+ 1 more
- (no CPE)
- (no CPE)range: <5.9.5
- osv-coords40 versionspkg:rpm/opensuse/strongswan&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/strongswan&distro=openSUSE%20Tumbleweedpkg:rpm/suse/strongswan&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/strongswan&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/strongswan&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP3pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP2pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/strongswan&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3pkg:rpm/suse/strongswan&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/suse/strongswan&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/suse/strongswan&distro=SUSE%20Manager%20Server%204.1pkg:rpm/suse/strongswan&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/strongswan&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/strongswan&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/strongswan&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 5.8.2-11.24.1+ 39 more
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.9.5-1.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 4.4.0-6.36.12.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 4.4.0-6.36.12.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-4.17.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.8.2-11.24.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
- (no CPE)range: < 5.1.3-26.20.1
Patches
Vulnerability mechanics
References
1News mentions
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