Medium severity · published Apr 11, 2024
CVE-2024-3652
IKEv1 default AH/ESP responder can cause libreswan to abort and restart
6.5
CVSS
0.8%
EPSS
No
On KEV
Description
The Libreswan Project was notified of an issue causing libreswan to restart when using IKEv1 without specifying an esp= line. When the peer requests AES-GMAC, libreswan's default proposal handler causes an assertion failure and crashes and restarts. IKEv2 connections are not affected.
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 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libreswan · The Libreswan Project (www.libreswan.org)
3.22 through 4.14 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-3652
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-3652
Mailing List
http://www.openwall.com/lists/oss-security/2024/04/18/2
Third Party Advisory
https://libreswan.org/security/CVE-2024-3652
More from libreswan
6.5
CVE-2024-2357
IKEv2 misconfiguration can cause libreswan to abort and restart