CVE-2023-38710

Description

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.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.06%

Third-Party Advisory github.com Third-Party Advisory libreswan.org

Affected: n/a n/a

References

Link	Tags
https://github.com/libreswan/libreswan/tags	third party advisory
https://libreswan.org/security/CVE-2023-38710/	third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-38710?: CVE-2023-38710 has been scored as a medium severity vulnerability.
How to fix CVE-2023-38710?: To fix CVE-2023-38710, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-38710 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-38710 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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