CVE-2021-31374
Assigner: juniper
Published: 2021-10-13T00:00:00
State: PUBLISHED
affected: product: Junos OS
vendor: Juniper Networks
versions: lessThan: 17.3R3-S11
status: affected
version: 17.3
versionType: custom
lessThan: 17.4R2-S13, 17.4R3-S4
status: affected
version: 17.4
versionType: custom
lessThan: 18.1R3-S12
status: affected
version: 18.1
versionType: custom
lessThan: 18.2R2-S8, 18.2R3-S7
status: affected
version: 18.2
versionType: custom
lessThan: 18.3R3-S4
status: affected
version: 18.3
versionType: custom
lessThan: 18.4R1-S8, 18.4R2-S7, 18.4R3-S7
status: affected
version: 18.4
versionType: custom
lessThan: 19.1R1-S6, 19.1R2-S2, 19.1R3-S4
status: affected
version: 19.1
versionType: custom
lessThan: 19.2R1-S6, 19.2R3-S1
status: affected
version: 19.2
versionType: custom
lessThan: 19.3R2-S5, 19.3R3-S1
status: affected
version: 19.3
versionType: custom
lessThan: 19.4R1-S4, 19.4R2-S3, 19.4R3-S1
status: affected
version: 19.4
versionType: custom
lessThan: 20.1R2
status: affected
version: 20.1
versionType: custom
lessThan: 20.2R2
status: affected
version: 20.2
versionType: custom
lessThan: 20.3R1-S1, 20.3R2
status: affected
version: 20.3
versionType: custom
product: Junos OS Evolved
vendor: Juniper Networks
versions: lessThan: 20.3R2-EVO
status: affected
version: 20.3
versionType: custom
configurations: value: The following minimal configuration is necessary:

* Must be running Junos OS or Junos OS Evolved.
* A BGP peering session is established.
datePublic: 2021-10-13T00:00:00
descriptions: value: On Juniper Networks Junos OS and Junos OS Evolved devices processing a specially crafted BGP UPDATE or KEEPALIVE message can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued receipt and processing of this message will create a sustained Denial of Service (DoS) condition. This issue affects both IBGP and EBGP deployments over IPv4 or IPv6. This issue affects: Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1; 19.4 versions prior to 19.4R1-S4, 19.4R1-S4, 19.4R2-S3, 19.4R3-S1; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R2; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: 20.3 versions prior to 20.3R2-EVO.
exploits: value: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
problemTypes: descriptions: cweId: CWE-787
description: CWE-787 Out-of-bounds Write
type: CWE
descriptions: description: Denial of Service (DoS)
type: text
solutions: value: The following software releases have been updated to resolve this specific issue: 
Junos OS: 17.3R3-S11, 17.4R2-S13, 17.4R3-S4, 18.1R3-S12, 18.2R2-S8, 18.3R3-S4, 18.4R1-S8, 18.4R2-S7, 18.4R3-S7, 19.1R1-S6, 19.1R2-S2, 19.1R3-S4, 19.2R1-S6, 19.2R3-S1, 19.3R2-S5, 19.3R3-S1, 19.4R1-S4, 19.4R2-S3, 19.4R3-S1, 20.1R2, 20.1R3, 20.2R2, 20.2R3, 20.3R1-S1, 20.3R2, 20.4R1, and all subsequent releases.

Junos OS Evolved: 20.3R2-EVO and all subsequent releases.
source: advisory: JSA11239
defect: 1543234
discovery: INTERNAL
title: Junos OS and Junos OS Evolved: RPD crash while processing a specially crafted BGP UPDATE or KEEPALIVE message.
workarounds: value: There are no viable workarounds for this issue.
x_generator: engine: Vulnogram 0.0.9