CVE-2022-22191

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 14-04-2022 06:15

Last modified: - 21-04-2022 11:49

Total changes: - 2

Description

A Denial of Service (DoS) vulnerability in the processing of a flood of specific ARP traffic in Juniper Networks Junos OS on the EX4300 switch, sent from the local broadcast domain, may allow an unauthenticated network-adjacent attacker to trigger a PFEMAN watchdog timeout, causing the Packet Forwarding Engine (PFE) to crash and restart. After the restart, transit traffic will be temporarily interrupted until the PFE is reprogrammed. In a virtual chassis (VC), the impacted Flexible PIC Concentrator (FPC) may split from the VC temporarily, and join back into the VC once the PFE restarts. Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS on the EX4300: All versions prior to 15.1R7-S12; 18.4 versions prior to 18.4R2-S10, 18.4R3-S11; 19.1 versions prior to 19.1R3-S8; 19.2 versions prior to 19.2R1-S9, 19.2R3-S4; 19.3 versions prior to 19.3R3-S5; 19.4 versions prior to 19.4R2-S6, 19.4R3-S7; 20.1 versions prior to 20.1R3-S3; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3-S1; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2-S1, 21.2R3; 21.3 versions prior to 21.3R1-S2, 21.3R2.

Common Vulnerability Scoring System (CVSS)

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

Low

Attack complexity

Adjacent

Attack vector

High

Availability

None

Confidentiality

None

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

6.5

Base score

2.8

3.6

Exploitability score

Impact score

Verification logic

AND

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vendor=juniper AND product=junos AND version=20.2 AND update=r2-s2

vendor=juniper AND product=junos AND version=20.2 AND update=r2-s3

vendor=juniper AND product=junos AND version=20.2 AND update=r3

vendor=juniper AND product=junos AND version=20.2 AND update=r3-s1

vendor=juniper AND product=junos AND version=20.2 AND update=r3-s2

vendor=juniper AND product=junos AND version=20.3 AND update=-

vendor=juniper AND product=junos AND version=20.3 AND update=r1

vendor=juniper AND product=junos AND version=20.3 AND update=r1-s1

vendor=juniper AND product=junos AND version=20.3 AND update=r2

vendor=juniper AND product=junos AND version=20.3 AND update=r2-s1

vendor=juniper AND product=junos AND version=20.3 AND update=r3

vendor=juniper AND product=junos AND version=20.3 AND update=r3-s1

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vendor=juniper AND product=junos AND version=20.4 AND update=r1-s1

vendor=juniper AND product=junos AND version=20.4 AND update=r2

vendor=juniper AND product=junos AND version=20.4 AND update=r2-s1

vendor=juniper AND product=junos AND version=20.4 AND update=r2-s2

vendor=juniper AND product=junos AND version=20.4 AND update=r3

vendor=juniper AND product=junos AND version=21.1 AND update=-

vendor=juniper AND product=junos AND version=21.1 AND update=r1

vendor=juniper AND product=junos AND version=21.1 AND update=r1-s1

vendor=juniper AND product=junos AND version=21.1 AND update=r2

vendor=juniper AND product=junos AND version=21.1 AND update=r2-s1

vendor=juniper AND product=junos AND version=21.1 AND update=r2-s2

vendor=juniper AND product=junos AND version=21.2 AND update=r1

vendor=juniper AND product=junos AND version=21.2 AND update=r1-s1

vendor=juniper AND product=junos AND version=21.2 AND update=r1-s2

vendor=juniper AND product=junos AND version=21.2 AND update=r2

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vendor=juniper AND product=ex4300 AND version=-

Reference

https://kb.juniper.net/JSA69502

Keywords

CVE-2022-22191

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2022-22191

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures