CVE-2020-1645 Information

Description

When 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 stream of packets processed by the Multiservices PIC Management Daemon (mspmand) process responsible for managing \URL Filtering service\ may crash causing the Services PIC to restart. While the Services PIC is restarting all PIC services including DNS filtering service (DNS sink holing) will be bypassed until the Services PIC completes its boot process. If the issue occurs system core-dumps output will show a crash of mspmand process: root@device show system core-dumps -rw-rw—- 1 nobody wheel 575685123 Date /var/tmp/pics/mspmand.core.*.gz This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S8; 18.3 versions prior to 18.3R2-S4 18.3R3-S1; 18.4 versions prior to 18.4R2-S5 18.4R3; 19.1 versions prior to 19.1R2-S2 19.1R3; 19.2 versions prior to 19.2R1-S5 19.2R2; 19.3 versions prior to 19.3R2-S3 19.3R3; 19.4 versions prior to 19.4R1-S3 19.4R2. This issue does not affect Juniper Networks Junos OS releases prior to 17.3R2.

CVSS Vector

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

Reference

https://kb.juniper.net/JSA11028

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

LOW

Base Severity

8.3