This security advisory describes one medium risk vulnerability.
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] [PCI]
Exploit availability: NoDescription
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing IKEv1 informational exchange messages. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.Mitigation
Install updates from vendor's website.Vulnerable software versions
libreswan: 3.27, 3.28, 3.29, 3.30, 3.31CPE
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.