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Description

A NULL Pointer Dereference vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an attacker causing specific, valid control traffic to be sent out of a Dual-Stack (DS) Lite tunnel to crash the flowd process, resulting in a Denial of Service (DoS). Continuous triggering of specific control traffic will create a sustained Denial of Service (DoS) condition. On all SRX platforms, when specific, valid control traffic needs to be sent out of a DS-Lite tunnel, a segmentation fault occurs within the flowd process, resulting in a network outage until the flowd process restarts. This issue affects Junos OS on SRX Series: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S9, * from 22.2 before 22.2R3-S5, * from 22.4 before 22.4R3-S6, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2.

PUBLISHED Reserved 2025-03-24 | Published 2025-04-09 | Updated 2025-04-24 | Assigner juniper




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:Y/R:A/V:C/RE:M/U:Green

Problem types

CWE-476 NULL Pointer Dereference

Product status

Default status
unaffected

Any version before 21.2R3-S9
affected

21.4 (semver) before 21.4R3-S9
affected

22.2 (semver) before 22.2R3-S5
affected

22.4 (semver) before 22.4R3-S6
affected

23.2 (semver) before 23.2R2-S3
affected

23.4 (semver) before 23.4R2
affected

Timeline

2025-04-09:Initial Publication
2025-04-24:Corrected configuration example for SRX Series

References

supportportal.juniper.net/JSA96455 vendor-advisory

cve.org (CVE-2025-30645)

nvd.nist.gov (CVE-2025-30645)

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