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

CVE-2024-21594

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

Description

A Heap-based Buffer Overflow vulnerability in the Network Services Daemon (NSD) of Juniper Networks Junos OS allows authenticated, low privileged, local attacker to cause a Denial of Service (DoS).

On an SRX 5000 Series device, when executing a specific command repeatedly, memory is corrupted, which leads to a Flow Processing Daemon (flowd) crash.

The NSD process has to be restarted to restore services.

If this issue occurs, it can be checked with the following command:

user@host> request security policies check
The following log message can also be observed:

Error: policies are out of sync for PFE node<number>.fpc<number>.pic<number>.
This issue affects:

Juniper Networks Junos OS on SRX 5000 Series

  • All versions earlier than 20.4R3-S6;
  • 21.1 versions earlier than 21.1R3-S5;
  • 21.2 versions earlier than 21.2R3-S4;
  • 21.3 versions earlier than 21.3R3-S3;
  • 21.4 versions earlier than 21.4R3-S3;
  • 22.1 versions earlier than 22.1R3-S1;
  • 22.2 versions earlier than 22.2R3;
  • 22.3 versions earlier than 22.3R2.

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CVSS V3 Severity and Metrics
Base Score:
5.5 Medium
Impact Score:
3.6
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Vendors

  • juniper

Products

  • junos,
  • junos 20.4,
  • junos 21.1,
  • junos 21.2,
  • junos 21.3,
  • junos 21.4,
  • junos 22.1,
  • junos 22.2,
  • junos 22.3

Additional Info

Technical Analysis