CVE detail

CVE-2020-1637 — CVE-2020-1637

Published 2020-04-08 · Modified 2026-06-17 · Vendor juniper · Product junos · Source nvd
HIGH
severity
CVSS-derived band
7.2
CVSS v3
0–10 scale
0.0081
EPSS probability
exploitation probability, 30d
53.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog

Description

A vulnerability in Juniper Networks SRX Series device configured as a Junos OS Enforcer device may allow a user to access network resources that are not permitted by a UAC policy. This issue might occur when the IP address range configured in the Infranet Controller (IC) is configured as an IP address range instead of an IP address/netmask. See the Workaround section for more detail. The Junos OS Enforcer CLI settings are disabled by default. This issue affects Juniper Networks Junos OS on SRX Series: 12.3X48 versions prior to 12.3X48-D100; 15.1X49 versions prior to 15.1X49-D210; 17.3 versions prior to 17.3R2-S5, 17.3R3-S8; 17.4 versions prior to 17.4R2-S9, 17.4R3-S1; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R2-S7, 18.2R3-S3; 18.3 versions prior to 18.3R1-S7, 18.3R3-S2

Remediation

vendor remediation guidance

The following software releases have been updated to resolve this specific issue: 12.3X48-D100, 15.1X49-D210, 16.1R7-S7, 17.3R2-S5, 17.3R3-S8, 17.4R2-S9, 17.4R3-S1, 18.1R3-S10, 18.2R3-S3, 18.3R1-S7, 18.3R3-S2, 18.4R1-S6, 18.4R2-S4, 18.4R3-S1, 19.1R1-S4, 19.1R2-S1, 19.1R3, 19.2R1-S3, 19.2R2, 19.3R2-S1, 19.3R3, 19.4R1-S1, 19.4R2, 20.1R1, and all subsequent releases.

workarounds

To avoid this issue, the IP address configuration in the IC Server should be configured as IP address/netmask, rather than an IP address range. For example: configure 10.0.0.0/25 instead of 10.0.0.1-127.

ProductVulnerable rangeFixed versionAdvisory
Juniper Networks Junos OS>=12.3X48<12.3X48-D10012.3X48-D100advisory ↗
Juniper Networks Junos OS>=15.1X49<15.1X49-D21015.1X49-D210advisory ↗
Juniper Networks Junos OS>=17.3<17.3R2-S5, 17.3R3-S817.3R2-S5, 17.3R3-S8advisory ↗
Juniper Networks Junos OS>=17.4<17.4R2-S9, 17.4R3-S117.4R2-S9, 17.4R3-S1advisory ↗
Juniper Networks Junos OS>=18.1<18.1R3-S1018.1R3-S10advisory ↗
Juniper Networks Junos OS>=18.2<18.2R2-S7, 18.2R3-S318.2R2-S7, 18.2R3-S3advisory ↗
Juniper Networks Junos OS>=18.3<18.3R1-S7, 18.3R3-S218.3R1-S7, 18.3R3-S2advisory ↗
Juniper Networks Junos OS>=18.4<18.4R1-S6, 18.4R2-S4, 18.4R3-S118.4R1-S6, 18.4R2-S4, 18.4R3-S1advisory ↗
Juniper Networks Junos OS>=19.1<19.1R1-S4, 19.1R2-S1, 19.1R319.1R1-S4, 19.1R2-S1, 19.1R3advisory ↗
Juniper Networks Junos OS>=19.2<19.2R1-S3, 19.2R219.2R1-S3, 19.2R2advisory ↗
Juniper Networks Junos OS>=19.3<19.3R2-S1, 19.3R319.3R2-S1, 19.3R3advisory ↗
Juniper Networks Junos OS>=19.4<19.4R1-S1, 19.4R219.4R1-S1, 19.4R2advisory ↗

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.