CVE-2023-38712
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk48th percentile - higher than 48% of all known CVEs
Summary
An issue was discovered in Libreswan 3.x and 4.x before version 4.12 related to an IKEv1 ISAKMP SA Informational Exchange packet. When it contains a Delete/Notify payload followed by further Notifies, it can lead to a NULL pointer dereference, causing the pluto daemon to crash and restart.
Risk Assessment
The crash of the pluto daemon may lead to service interruptions in the VPN, affecting the availability and security of communications within the organization.
Recommendation
It is recommended to update Libreswan to version 4.12 or later to mitigate this vulnerability and to monitor logs for potential exploitation attempts.
Original NVD description (English source)
An issue was discovered in Libreswan 3.x and 4.x before 4.12. When an IKEv1 ISAKMP SA Informational Exchange packet contains a Delete/Notify payload followed by further Notifies that act on the ISAKMP SA, such as a duplicated Delete/Notify message, a NULL pointer dereference on the deleted state causes the pluto daemon to crash and restart.