Vulnerability identifier: #VU67813
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-295
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
strongSwan
Server applications /
Encryption software
Vendor: strongswan.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an error within the revocation plugin, which uses potentially untrusted OCSP URIs and
CRL distribution points (CDP) in certificates. A remote attacker can initiate the IKE_SAs and send crafted certificates that contain URIs
pointing to servers under their control. As a result, a remote attacker can perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
strongSwan: 5.0.0 - 5.9.7
External links
http://strongswan.org/blog/2022/10/03/strongswan-vulnerability-(cve-2022-40617).html
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.