CVE-2023-36835
Assigner: juniper
Published: 2023-07-14T17:11:26.454Z
State: PUBLISHED
affected: defaultStatus: unaffected
platforms: QFX10000 Series
product: Junos OS
vendor: Juniper Networks
versions: changes: at: 20.3R1
status: affected
lessThan: 20.3*
status: affected
version: 20.3
versionType: custom
lessThan: 20.4R3-S5
status: affected
version: 20.4
versionType: custom
lessThan: 21.1R3-S5
status: affected
version: 21.1
versionType: custom
lessThan: 21.2R3-S5
status: affected
version: 21.2
versionType: custom
lessThan: 21.3R3-S4
status: affected
version: 21.3
versionType: custom
lessThan: 21.4R3-S1
status: affected
version: 21.4
versionType: custom
lessThan: 22.1R3
status: affected
version: 22.1
versionType: custom
lessThan: 22.2R2
status: affected
version: 22.2
versionType: custom
lessThan: 22.3R1-S2, 22.3R2
status: affected
version: 22.3
versionType: custom
configurations: supportingMedia: base64: no
type: text/html
value: To be exposed to this issue the QFX device needs be configured for VXLAN with either of the following statements:<br><br><tt>&nbsp; [ vlans &lt;vlan&gt; vxlan ]<br><br>&nbsp; [ routing-instances &lt;routing-instance&gt; vxlan ]</tt>
value: To be exposed to this issue the QFX device needs be configured for VXLAN with either of the following statements:

  [ vlans <vlan> vxlan ]

  [ routing-instances <routing-instance> vxlan ]
datePublic: 2023-07-12T16:00:00.000Z
descriptions: supportingMedia: base64: no
type: text/html
value: An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on QFX10000 Series allows a network based attacker to cause a Denial of Service (DoS).<br><br>If a specific valid IP packet is received and that packet needs to be routed over a VXLAN tunnel, this will result in a PFE wedge condition due to which traffic gets impacted. As this is not a crash and restart scenario, this condition will persist until the system is rebooted to recover.<br><br>This issue affects Juniper Networks Junos OS on QFX10000:<br>20.3 version 20.3R1 and later versions;<br>20.4 versions prior to 20.4R3-S5;<br>21.1 versions prior to 21.1R3-S5;<br>21.2 versions prior to 21.2R3-S5;<br>21.3 versions prior to 21.3R3-S4;<br>21.4 versions prior to 21.4R3-S1;<br>22.1 versions prior to 22.1R3;<br>22.2 versions prior to 22.2R2;<br>22.3 versions prior to 22.3R1-S2, 22.3R2.<br>
value: An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on QFX10000 Series allows a network based attacker to cause a Denial of Service (DoS).

If a specific valid IP packet is received and that packet needs to be routed over a VXLAN tunnel, this will result in a PFE wedge condition due to which traffic gets impacted. As this is not a crash and restart scenario, this condition will persist until the system is rebooted to recover.

This issue affects Juniper Networks Junos OS on QFX10000:
20.3 version 20.3R1 and later versions;
20.4 versions prior to 20.4R3-S5;
21.1 versions prior to 21.1R3-S5;
21.2 versions prior to 21.2R3-S5;
21.3 versions prior to 21.3R3-S4;
21.4 versions prior to 21.4R3-S1;
22.1 versions prior to 22.1R3;
22.2 versions prior to 22.2R2;
22.3 versions prior to 22.3R1-S2, 22.3R2.

exploits: supportingMedia: base64: no
type: text/html
value: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.<br>
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
format: CVSS
scenarios: value: GENERAL
problemTypes: descriptions: cweId: CWE-754
description: CWE-754 Improper Check for Unusual or Exceptional Conditions
type: CWE
descriptions: description: Denial of Service (DoS)
solutions: supportingMedia: base64: no
type: text/html
value: The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S5, 21.1R3-S5, 21.2R3-S5, 21.3R3-S4, 21.4R3-S1, 22.1R3, 22.2R2, 22.3R1-S2, 22.3R2, 22.4R1, and all subsequent releases.<br>
value: The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S5, 21.1R3-S5, 21.2R3-S5, 21.3R3-S4, 21.4R3-S1, 22.1R3, 22.2R2, 22.3R1-S2, 22.3R2, 22.4R1, and all subsequent releases.

source: advisory: JSA71642
defect: 1678992
discovery: USER
title: Junos OS: QFX10000 Series: All traffic will be dropped after a specific valid IP packet has been received which needs to be routed over a VXLAN tunnel
workarounds: supportingMedia: base64: no
type: text/html
value: There are no known workarounds for this issue.<br>
value: There are no known workarounds for this issue.

x_generator: engine: Vulnogram 0.1.0-dev