Remote Denial of Service in strongSwan Due to Revocation Plugin Vulnerability
CVE-2022-40617

7.5HIGH

Key Information:

Vendor

Strongswan

Status
Strongswan
Vendor
CVE Published:
31 October 2022

What is CVE-2022-40617?

A vulnerability in strongSwan prior to version 5.9.8 allows remote attackers to exploit the revocation plugin. By sending a specially crafted end-entity or intermediate CA certificate with a CRL/OCSP URL that directs to a non-responsive server, attackers can induce a denial of service. This can occur if the server fails to respond appropriately following the initial TCP handshake, leading to resource exhaustion or unhandled request scenarios.

References

https://www.strongswan.org/blog/2022/10/03/strongswan-vul...
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.