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

CVE-2024-39551

Disclosure Date: July 11, 2024
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

An Uncontrolled Resource Consumption vulnerability in the H.323 ALG (Application Layer Gateway) of  Juniper Networks Junos OS on SRX Series and MX Series with SPC3 and MS-MPC/MIC, allows an unauthenticated network-based attacker to send specific packets causing traffic loss leading to Denial of Service (DoS). 

Continued receipt and processing of these specific packets will sustain the Denial of Service condition.

The memory usage can be monitored using the below command.

  user@host> show usp memory segment sha data objcache jsf 
This issue affects SRX Series and MX Series with SPC3 and MS-MPC/MIC: 

  •  20.4 before 20.4R3-S10, 
  •  21.2 before 21.2R3-S6, 
  •  21.3 before 21.3R3-S5, 
  •  21.4 before 21.4R3-S6, 
  •  22.1 before 22.1R3-S4, 
  •  22.2 before 22.2R3-S2, 
  •  22.3 before 22.3R3-S1, 
  •  22.4 before 22.4R3, 
  •  23.2 before 23.2R2.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
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