PT-2025-15853 · Juniper Networks · Junos

Published

2025-04-09

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Updated

2025-04-11

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CVE-2025-30645

CVSS v4.0

8.7

High

VectorAV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:C/RE:M/U:Green
Name of the Vulnerable Software and Affected Versions: Junos OS versions prior to 21.2R3-S9 Junos OS versions from 21.4 before 21.4R3-S9 Junos OS versions from 22.2 before 22.2R3-S5 Junos OS versions from 22.4 before 22.4R3-S6 Junos OS versions from 23.2 before 23.2R2-S3 Junos OS versions from 23.4 before 23.4R2
Description: A NULL Pointer Dereference issue in the flow daemon of Juniper Networks Junos OS on SRX Series allows an attacker to cause a Denial of Service (DoS) by sending specific, valid control traffic out of a Dual-Stack (DS) Lite tunnel, resulting in the crash of the flowd process. Continuous triggering of this traffic will create a sustained DoS condition. This occurs when specific control traffic needs to be sent out of a DS-Lite tunnel, causing a segmentation fault within the flowd process and resulting in a network outage until the flowd process restarts.
Recommendations: For versions prior to 21.2R3-S9, update to 21.2R3-S9 or later. For versions from 21.4 before 21.4R3-S9, update to 21.4R3-S9 or later. For versions from 22.2 before 22.2R3-S5, update to 22.2R3-S5 or later. For versions from 22.4 before 22.4R3-S6, update to 22.4R3-S6 or later. For versions from 23.2 before 23.2R2-S3, update to 23.2R2-S3 or later. For versions from 23.4 before 23.4R2, update to 23.4R2 or later.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2025-05186
CVE-2025-30645

Affected Products

Junos