Riskcovery

CVE-2023-36835

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

State
Published
Severity
7.5 High
Published
Jul 14, 2023
Updated
Nov 7, 2024
Reserved
Jun 27, 2023

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

  • CWE-754 Improper Check for Unusual or Exceptional Conditions

Affected Products

ProductVersions
Junos OSJuniper Networks
  • 20.3 to before 20.3*Affectedfrom 20.3R1Affected
  • 20.4 to before 20.4R3-S5Affected
  • 21.1 to before 21.1R3-S5Affected
  • 21.2 to before 21.2R3-S5Affected
  • 21.3 to before 21.3R3-S4Affected
  • 21.4 to before 21.4R3-S1Affected
  • 22.1 to before 22.1R3Affected
  • 22.2 to before 22.2R2Affected
  • 22.3 to before 22.3R1-S2, 22.3R2Affected

References

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