CVE-2023-38710
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductLibreswan
PublishedAug 25, 2023
First seenAug 25, 2023
How to fix
Update
- libreswan libreswan4.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libreswan libreswan | 3.20 ≤ v < 4.12 | 4.12 |
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