CVE-2020-1683 Information

Description

On Juniper Networks Junos OS devices a specific SNMP OID poll causes a memory leak which over time leads to a kernel crash (vmcore). Prior to the kernel crash other processes might be impacted such as failure to establish SSH connection to the device. The administrator can monitor the output of the following command to check if there is memory leak caused by this issue: user@device show system virtual-memory | match \pfe_ipc|kmem\ pfe_ipc 147 5K - 164352 1632648192 – increasing vm.kmem_map_free: 127246336 – decreasing pfe_ipc 0 0K - 18598 328192 vm.kmem_map_free: 134582272 This issue affects Juniper Networks Junos OS: 17.4R3; 18.1 version 18.1R3-S5 and later versions prior to 18.1R3-S10; 18.2 version 18.2R3 and later versions prior to 18.2R3-S3; 18.2X75 version 18.2X75-D420 18.2X75-D50 and later versions prior to 18.2X75-D430 18.2X75-D53 18.2X75-D60; 18.3 version 18.3R3 and later versions prior to 18.3R3-S2; 18.4 version 18.4R1-S4 18.4R2 and later versions prior to 18.4R2-S5 18.4R3-S1; 19.1 version 19.1R2 and later versions prior to 19.1R2-S2 19.1R3; 19.2 version 19.2R1 and later versions prior to 19.2R1-S5 19.2R2; 19.3 versions prior to 19.3R2-S5 19.3R3; 19.4 versions prior to 19.4R1-S3 19.4R2. This issue does not affect Juniper Networks Junos OS prior to 17.4R3.

CVSS Vector

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

Reference

https://kb.juniper.net/JSA11080

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5