CVE-2020-1637

MediumCVSS 6.5/10Last modified Jun 17, 2026

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; 18.4 versions prior to 18.4R1-S6, 18.4R2-S4, 18.4R3-S1; 19.1 versions prior to 19.1R1-S4, 19.1R2-S1, 19.1R3; 19.2 versions prior to 19.2R1-S3, 19.2R2; 19.3 versions prior to 19.3R2-S1, 19.3R3; 19.4 versions prior to 19.4R1-S1, 19.4R2.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-288CWE-287

Affected software

VendorProductVersions
Juniper NetworksJunos OS>= 12.3X48, < 12.3X48-D100; >= 15.1X49, < 15.1X49-D210; >= 17.3, < 17.3R2-S5, 17.3R3-S8; >= 17.4, < 17.4R2-S9, 17.4R3-S1; >= 18.1, < 18.1R3-S10; >= 18.2, < 18.2R2-S7, 18.2R3-S3; >= 18.3, < 18.3R1-S7, 18.3R3-S2; >= 18.4, < 18.4R1-S6, 18.4R2-S4, 18.4R3-S1; >= 19.1, < 19.1R1-S4, 19.1R2-S1, 19.1R3; >= 19.2, < 19.2R1-S3, 19.2R2; >= 19.3, < 19.3R2-S1, 19.3R3; >= 19.4, < 19.4R1-S1, 19.4R2

References

Timeline

Published
Apr 8, 2020
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2020

CVE-2020-16387.5The FPC (Flexible PIC Concentrator) of Juniper Networks Junos OS and Junos OS Evolved may restart after processing a specific IPv4 packet. OCVE-2020-16397.5When an attacker sends a specific crafted Ethernet Operation, Administration, and Maintenance (Ethernet OAM) packet to a target device, it mCVE-2020-16407.5An improper use of a validation framework when processing incoming genuine BGP packets within Juniper Networks RPD (routing protocols procesCVE-2020-16416.5A Race Condition vulnerability in Juniper Networks Junos OS LLDP implementation allows an attacker to cause LLDP to crash leading to a DeniaCVE-2020-16435.5Execution of the "show ospf interface extensive" or "show ospf interface detail" CLI commands on a Juniper Networks device running Junos OS CVE-2020-16447.5On Juniper Networks Junos OS and Junos OS Evolved devices, the receipt of a specific BGP UPDATE packet causes an internal counter to be incrCVE-2020-16458.3When DNS filtering is enabled on Juniper Networks Junos MX Series with one of the following cards MS-PIC, MS-MIC or MS-MPC, an incoming streCVE-2020-16467.5On Juniper Networks Junos OS and Junos OS Evolved devices, processing a specific UPDATE for an EBGP peer can lead to a routing process daemoCVE-2020-16479.8On Juniper Networks SRX Series with ICAP (Internet Content Adaptation Protocol) redirect service enabled, a double free vulnerability can leCVE-2020-16487.5On Juniper Networks Junos OS and Junos OS Evolved devices, processing a specific BGP packet can lead to a routing process daemon (RPD) crashCVE-2020-16497.5When a device running Juniper Networks Junos OS with MPC7, MPC8, or MPC9 line cards installed and the system is configured for inline IP reaCVE-2020-16507.5On Juniper Networks Junos MX Series with service card configured, receipt of a stream of specific packets may crash the MS-PIC component on
CVE-2020-1637: Medium severity, CVSS 6.5 | Vulnix