Junos OS: Receipt of malformed DHCPv6 packets causes jdhcpd to crash.
Published Oct 16, 2020
7.5
HIGHCVSS 3.1
EPSS 1.28%
Description
On Juniper Networks Junos OS platforms configured as DHCPv6 local server or DHCPv6 Relay Agent, Juniper Networks Dynamic Host Configuration Protocol Daemon (JDHCPD) process might crash with a core dump if a malformed DHCPv6 packet is received, resulting with the restart of the daemon. This issue only affects DHCPv6, it does not affect DHCPv4. This issue affects: Juniper Networks Junos OS 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.2X75 versions prior to 18.2X75-D65; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.2 version 19.2R2 and later versions; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R1-S3, 20.1R2; This issue does not affect Juniper Networks Junos OS prior to 17.4R1.
Affected products
-
- Version 17.4StatusaffectedConstraints<17.4R2-S12, 17.4R3-S3
- Version 18.1StatusaffectedConstraints<18.1R3-S11
- Version 18.2StatusaffectedConstraints<18.2R3-S6
- Version 18.2X75StatusaffectedConstraints<18.2X75-D65
- Version 18.3StatusaffectedConstraints<18.3R2-S4, 18.3R3-S3
- Version 18.4StatusaffectedConstraints<18.4R2-S5, 18.4R3-S4
- Version 19.1StatusaffectedConstraints<19.1R3-S2
- Version 19.2StatusaffectedConstraints<19.2R1-S5, 19.2R3
- Version 19.3StatusaffectedConstraints<19.3R2-S4, 19.3R3
- Version 19.4StatusaffectedConstraints<19.4R1-S3, 19.4R2-S2, 19.4R3
- Version 20.1StatusaffectedConstraints<20.1R1-S3, 20.1R2
- Version unspecifiedStatusunaffectedConstraints<17.4R1
- 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 |
|
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 17.4
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
- 18.1
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- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2
- 18.2x75
- 18.2x75
- 18.2x75
- 18.2x75
- 18.2x75
- 18.2x75
- 18.2x75
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.3
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 18.4
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.1
- 19.2
- 19.2
- 19.2
- 19.2
- 19.2
- 19.2
- 19.3
- 19.3
- 19.3
- 19.3
- 19.3
- 19.3
- 19.3
- 19.4
- 19.4
- 19.4
- 19.4
- 19.4
- 20.1
- 20.1
- 20.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
The following software releases have been updated to resolve this specific issue: Junos OS 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R3-S6, 18.2X75-D65, 18.3R2-S4, 18.3R3-S3, 18.4R2-S5, 18.4R3-S4, 19.1R3-S2, 19.2R1-S5, 19.2R3, 19.3R2-S4, 19.3R3, 19.4R1-S3, 19.4R2-S2, 19.4R3, 20.1R1-S3, 20.1R2, 20.2R1 and all subsequent releases.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
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 4, 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 (12 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 1.28% (0.01276) | 68.95th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.28% (0.01276) | 68.65th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00103) | 42.78th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.10% (0.00103) | 41.51th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.09% (0.00089) | 36.52th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.84% (0.01840) | 47.83th | v1 |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Jan 5, 2022 | 0.42% (0.00416) | 26.65th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (1)
- https://kb.juniper.net/JSA11068 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://kb.juniper.net/JSA11068 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.