// For flags

CVE-2024-2357

IKEv2 misconfiguration can cause libreswan to abort and restart

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

The Libreswan Project was notified of an issue causing libreswan to restart under some IKEv2 retransmit scenarios when a connection is configured to use PreSharedKeys (authby=secret) and the connection cannot find a matching configured secret. When such a connection is automatically added on startup using the auto= keyword, it can cause repeated crashes leading to a Denial of Service.

Se notificó a Libreswan Project sobre un problema que causaba que libreswan se reiniciara en algunos escenarios de retransmisión de IKEv2 cuando una conexión está configurada para usar PreSharedKeys (authby=secret) y la conexión no puede encontrar un secreto configurado coincidente. Cuando dicha conexión se agrega automáticamente al inicio usando la palabra clave auto=, puede causar fallas repetidas que conducen a una denegación de servicio.

A flaw was found in Libreswan. This issue causes Libreswan to restart under some IKEv2 retransmit scenarios when a connection is configured to use PreSharedKeys (authby=secret), and the connection cannot find a matching configured secret. When automatically added on startup using the auto= keyword, it can cause repeated crashes, leading to a denial of service.

*Credits: Andrew Vaughn
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-03-09 CVE Reserved
  • 2024-03-11 CVE Published
  • 2024-03-21 EPSS Updated
  • 2024-11-20 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
The Libreswan Project (www.libreswan.org)
Search vendor "The Libreswan Project (www.libreswan.org)"
 Libreswan
Search vendor "The Libreswan Project (www.libreswan.org)" for product "Libreswan"
 >= 4.2 <= 4.12
Search vendor "The Libreswan Project (www.libreswan.org)" for product "Libreswan" and version " >= 4.2 <= 4.12"
en
Affected