Medium severity · published Aug 25, 2023
CVE-2023-38710
An issue was discovered in Libreswan before 4.12
6.5
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libreswan · Libreswan
3.20 before 4.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-38710
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-38710
Third Party Advisory
https://github.com/libreswan/libreswan/tags
Third Party Advisory
https://libreswan.org/security/CVE-2023-38710/
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