TI-2022-19263 Aliases CVE-2022-40617 GHSA-f2x8-4jwf-gqrg

strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the…

LOW 37CWE-400Published 2022-10-31 · Updated 2025-05-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-400.

Summary

strongSwan before 5.9.8 allows remote attackers to cause a denial of service in the revocation plugin by sending a crafted end-entity (and intermediate CA) certificate that contains a CRL/OCSP URL that points to a server (under the attacker's control) that doesn't properly respond but (for example) just does nothing after the initial TCP handshake, or sends an excessive amount of application data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01994 80th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 10

CPE	Versions	Role	Vendor
cpe:2.3:a:strongswan:strongswan::::::::	before 5.9.8	Vulnerable	strongSwan
cpe:2.3:o:canonical:ubuntu_linux:14.04::::esm:::	14.04	Vulnerable	Canonical
cpe:2.3:o:canonical:ubuntu_linux:16.04::::esm:::	16.04	Vulnerable	Canonical
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::	18.04	Vulnerable	Canonical
cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts:::	20.04	Vulnerable	Canonical
cpe:2.3:o:canonical:ubuntu_linux:22.04::::lts:::	22.04	Vulnerable	Canonical
cpe:2.3:o:debian:debian_linux:10.0:::::::*	10.0	Vulnerable	Debian
cpe:2.3:o:debian:debian_linux:11.0:::::::*	11.0	Vulnerable	Debian
cpe:2.3:o:fedoraproject:fedora:37:::::::*	37	Vulnerable	Fedoraproject
cpe:2.3:a:stormshield:stormshield_network_security::::::::	3.11.1 to before 3.11.20; 4.3.1 to before 4.3.15; 4.5.1 to before 4.6.0	Vulnerable	Stormshield

cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:* Versions before 5.9.8 Vulnerable ·strongSwan
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* Versions 20.04 Vulnerable ·Canonical
cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:* Versions 22.04 Vulnerable ·Canonical
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:* Versions 3.11.1 to before 3.11.20; 4.3.1 to before 4.3.15; 4.5.1 to before 4.6.0 Vulnerable ·Stormshield

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2022-40617
2026-10-03 Alias added: GHSA-f2x8-4jwf-gqrg

References

Advisory 1

FEDORA-2022-525510c815

Other 1

https://www.strongswan.org/blog/2022/10/03/strongswan-vulnerability-%28cve-2022-40617%29.html

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences