Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Adjacent_network
0

CVE-2024-21609

Disclosure Date: April 12, 2024
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the IKE daemon (iked) of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an administratively adjacent attacker which is able to successfully establish IPsec tunnels to cause a Denial of Service (DoS).

If specific values for the IPsec parameters local-ip, remote-ip, remote ike-id, and traffic selectors are sent from the peer, a memory leak occurs during every IPsec SA rekey which is carried out with a specific message sequence. This will eventually result in an iked process crash and restart.

The iked process memory consumption can be checked using the below command:
  user@host> show system processes extensive | grep iked
          PID USERNAME   PRI NICE   SIZE   RES   STATE   C TIME WCPU COMMAND
          56903 root       31   0     4016M 2543M CPU0   0 2:10 10.50% iked

This issue affects Juniper Networks Junos OS:

  • All versions earlier than 20.4R3-S9;
  • 21.2 versions earlier than 21.2R3-S7;
  • 21.3 versions earlier than 21.3R3-S5;
  • 21.4 versions earlier than 21.4R3-S4;
  • 22.1 versions earlier than 22.1R3-S3;
  • 22.2 versions earlier than 22.2R3-S2;
  • 22.3 versions earlier than 22.3R3;
  • 22.4 versions earlier than 22.4R3;
  • 23.2 versions earlier than 23.2R1-S2, 23.2R2.

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CVSS V3 Severity and Metrics
Base Score:
6.5 Medium
Impact Score:
3.6
Exploitability Score:
2.8
Vector:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Adjacent_network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Vendors

  • Juniper Networks

Products

  • Junos OS

Additional Info

Technical Analysis