CVE-2020-1640 Information

Description

An improper use of a validation framework when processing incoming genuine BGP packets within Juniper Networks RPD (routing protocols process) daemon allows an attacker to crash RPD thereby causing a Denial of Service (DoS) condition. This framework requires these packets to be passed. By continuously sending any of these types of formatted genuine packets an attacker can repeatedly crash the RPD process causing a sustained Denial of Service. Authentication to the BGP peer is not required. This issue can be initiated or propagated through eBGP and iBGP and can impact devices in either modes of use as long as the devices are configured to support the compromised framework and a BGP path is activated or active. This issue affects: Juniper Networks Junos OS 16.1 versions 16.1R7-S6 and later versions prior to 16.1R7-S8; 17.3 versions 17.3R2-S5 17.3R3-S6 and later versions prior to 17.3R3-S8; 17.4 versions 17.4R2-S7 17.4R3 and later versions prior to 17.4R2-S11 17.4R3-S2; 18.1 versions 18.1R3-S7 and later versions prior to 18.1R3-S10; 18.2 versions 18.2R2-S6 18.2R3-S2 and later versions prior to 18.2R2-S7 18.2R3-S5; 18.2X75 versions 18.2X75-D12 18.2X75-D32 18.2X75-D33 18.2X75-D51 18.2X75-D60 18.2X75-D411 18.2X75-D420 and later versions prior to 18.2X75-D32 18.2X75-D33 18.2X75-D420 18.2X75-D52 18.2X75-D60 18.2X75-D65 18.2X75-D70;(*1) 18.3 versions 18.3R1-S6 18.3R2-S3 18.3R3 and later versions prior to 18.3R2-S4 18.3R3-S2; 18.4 versions 18.4R1-S5 18.4R2-S4 18.4R3 and later versions prior to 18.4R1-S7 18.4R2-S5 18.4R3-S3(*2); 19.1 versions 19.1R1-S3 19.1R2 and later versions prior to 19.1R1-S5 19.1R2-S2 19.1R3-S2; 19.2 versions 19.2R1-S2 19.2R2 and later versions prior to 19.2R1-S5 19.2R2 19.2R3; 19.3 versions prior to 19.3R2-S3 19.3R3; 19.4 versions prior to 19.4R1-S2 19.4R2 19.4R3; 20.1 versions prior to 20.1R1-S1 20.1R2. This issue does not affect Junos OS prior to 16.1R1. This issue affects IPv4 and IPv6 traffic.

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/JSA11024

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