CVE detail

CVE-2020-1671 — CVE-2020-1671

Published 2020-10-16 · Modified 2026-06-17 · Vendor juniper · Product junos · Source nvd
HIGH
severity
CVSS-derived band
7.5
CVSS v3
0–10 scale
0.0128
EPSS probability
exploitation probability, 30d
67.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog

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 ve

Remediation

vendor remediation guidance

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.

workarounds

There are no viable workarounds for this issue.

ProductVulnerable rangeFixed versionAdvisory
Juniper Networks Junos OS>=17.4<17.4R2-S12, 17.4R3-S317.4R2-S12, 17.4R3-S3advisory ↗
Juniper Networks Junos OS>=18.1<18.1R3-S1118.1R3-S11advisory ↗
Juniper Networks Junos OS>=18.2<18.2R3-S618.2R3-S6advisory ↗
Juniper Networks Junos OS>=18.2X75<18.2X75-D6518.2X75-D65advisory ↗
Juniper Networks Junos OS>=18.3<18.3R2-S4, 18.3R3-S318.3R2-S4, 18.3R3-S3advisory ↗
Juniper Networks Junos OS>=18.4<18.4R2-S5, 18.4R3-S418.4R2-S5, 18.4R3-S4advisory ↗
Juniper Networks Junos OS>=19.1<19.1R3-S219.1R3-S2advisory ↗
Juniper Networks Junos OS>=19.2<19.2R1-S5, 19.2R319.2R1-S5, 19.2R3advisory ↗
Juniper Networks Junos OS>=19.3<19.3R2-S4, 19.3R319.3R2-S4, 19.3R3advisory ↗
Juniper Networks Junos OS>=19.4<19.4R1-S3, 19.4R2-S2, 19.4R319.4R1-S3, 19.4R2-S2, 19.4R3advisory ↗
Juniper Networks Junos OS>=20.1<20.1R1-S3, 20.1R220.1R1-S3, 20.1R2advisory ↗

References

cvedb.io · NVD · CISA KEV · FIRST EPSS · vendor advisories (CVE Program List v5). Informational only, no warranty — verify every remediation against the vendor advisory before acting on it. This product uses data from the NVD API but is not endorsed or certified by the NVD, CISA, FIRST.org or any vendor named. CVE® is a registered trademark of The MITRE Corporation.