What is CVE-2023-38710?

CVE-2023-38710 is a medium-severity vulnerability in Libreswan. CVSS score: 6.5/10. Published 2023-08-25.

How severe is CVE-2023-38710?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Libreswan

CVE-2023-38710

An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notify INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3) and causes the pluto daemon to crash and restart. NOTE: the earliest affected version is 3.20.

EPSS: 0.007 (49.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Libreswan
N/a — versions n/a

References

cve@mitre.org (Third Party Advisory)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2023-38710?: CVE-2023-38710 is a medium-severity vulnerability in Libreswan. CVSS score: 6.5/10. Published 2023-08-25.
How severe is CVE-2023-38710?: Medium severity. CVSS v3 base score is 6.5 out of 10.