Junos: SRX cluster denial of service vulnerability in flowd due to multicast packets
Published Oct 13, 2017
7.5
HIGHCVSS 3.0
EPSS 1.30%
Description
When Express Path (formerly known as service offloading) is configured on Juniper Networks SRX1400, SRX3400, SRX3600, SRX5400, SRX5600, SRX5800 in high availability cluster configuration mode, certain multicast packets might cause the flowd process to crash, halting or interrupting traffic from flowing through the device and triggering RG1+ (data-plane) fail-over to the secondary node. Repeated crashes of the flowd process may constitute an extended denial of service condition. This service is not enabled by default and is only supported in high-end SRX platforms. Affected releases are Juniper Networks Junos OS 12.3X48 prior to 12.3X48-D45, 15.1X49 prior to 15.1X49-D80 on SRX1400, SRX3400, SRX3600, SRX5400, SRX5600, SRX5800.
Affected products
-
- Version 12.3X48 prior to 12.3X48-D45StatusaffectedConstraints-
- Version 15.1X49 prior to 15.1X49-D80StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
There are no viable workarounds for this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.30% (0.01296) | 69.31th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.30% (0.01296) | 69.06th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.12% (0.00118) | 46.49th | v3 (v2023.03.01) |
| Jun 23, 2024 | 0.12% (0.00118) | 46.26th | v3 (v2023.03.01) |
| May 23, 2024 | 0.10% (0.00105) | 42.76th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00104) | 40.75th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00518) | 11.68th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.52% (0.00518) | 0.00th | v1 |
No CWE recorded.
References (1)
- https://kb.juniper.net/JSA10821 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://kb.juniper.net/JSA10821 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.