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

CVE-2024-39550

Disclosure Date: July 11, 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 rtlogd process of Juniper Networks Junos OS on MX Series with SPC3 allows an unauthenticated, adjacent attacker to trigger internal events cause ( which can be done by repeated port flaps) to cause a slow memory leak, ultimately leading to a Denial of Service (DoS).

Memory can only be recovered by manually restarting rtlogd process. 
The memory usage can be monitored using the below command.

    user@host> show system processes extensive | match rtlog 

This issue affects Junos OS on MX Series with SPC3 line card: 

  • from 21.2R3 before 21.2R3-S8, 
  • from 21.4R2 before 21.4R3-S6, 
  • from 22.1 before 22.1R3-S5, 
  • from 22.2 before 22.2R3-S3, 
  • from 22.3 before 22.3R3-S2, 
  • from 22.4 before 22.4R3-S1, 
  • from 23.2 before 23.2R2, 
  • from 23.4 before 23.4R2.

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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