CVE-2022-22170
Assigner: juniper
Published: 2022-01-12T00:00:00
State: PUBLISHED
affected: product: Junos OS
vendor: Juniper Networks
versions: lessThan: 19.4R1
status: unaffected
version: unspecified
versionType: custom
lessThan: 19.4R2-S6, 19.4R3-S6
status: affected
version: 19.4
versionType: custom
lessThan: 20.1R3-S2
status: affected
version: 20.1
versionType: custom
lessThan: 20.2R3-S3
status: affected
version: 20.2
versionType: custom
lessThan: 20.3R3-S1
status: affected
version: 20.3
versionType: custom
lessThan: 20.4R3
status: affected
version: 20.4
versionType: custom
lessThan: 21.1R3
status: affected
version: 21.1
versionType: custom
lessThan: 21.2R2
status: affected
version: 21.2
versionType: custom
configurations: value: For this issue to be exploitable a configuration like the following will have to exist:

  [ routing-instances <RI-name> instance-type virtual-switch ]
  [ routing-instances <RI-name> bridge-domains <BD-name> vlan-id <vlan#n> ]
  [ routing-instances <RI-name> bridge-domains <BD-name> vxlan ... ]
  [ interfaces ae0 unit <unit#> vlan-id <vlan#n> ]
  [ interfaces ae0 unit <unit#> family inet(6) address ... ]
datePublic: 2022-01-12T00:00:00
descriptions: value: A Missing Release of Resource after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause a Denial of Service (DoS) by sending specific packets over VXLAN which cause heap memory to leak and on exhaustion the PFE to reset. The heap memory utilization can be monitored with the command: user@host> show chassis fpc This issue affects: Juniper Networks Junos OS 19.4 versions prior to 19.4R2-S6, 19.4R3-S6; 20.1 versions prior to 20.1R3-S2; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2. This issue does not affect versions of Junos OS prior to 19.4R1.
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: description: Denial of Service (DoS)
type: text
descriptions: cweId: CWE-772
description: CWE-772 Missing Release of Resource after Effective Lifetime
type: CWE
solutions: value: The following Junos OS software releases have been updated to resolve this specific issue: 19.4R2-S6, 19.4R3-S6, 20.1R3-S2, 20.2R3-S3, 20.3R3-S1, 20.4R3, 21.1R3, 21.2R2, 21.3R1, and all subsequent releases.
source: advisory: JSA11277
defect: 1602407
discovery: USER
title: Junos OS: Specific packets over VXLAN cause FPC memory leak and ultimately reset
workarounds: value: There are no viable workarounds for this issue.
x_generator: engine: Vulnogram 0.0.9