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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2023-36839

Junos OS and Junos OS Evolved: An l2cpd crash will occur when specific LLDP packets are received

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Status
Published
Published
Updated
Assigning organization
juniper

Description

An Improper Validation of Specified Quantity in Input vulnerability in the Layer-2 control protocols daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker who sends specific LLDP packets to cause a Denial of Service(DoS). This issue occurs when specific LLDP packets are received and telemetry polling is being done on the device. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP. Also, if any services depend on LLDP state (like PoE or VoIP device recognition), then these will also be affected. This issue affects: Juniper Networks Junos OS * All versions prior to 20.4R3-S8; * 21.1 version 21.1R1 and later versions; * 21.2 versions prior to 21.2R3-S5; * 21.3 versions prior to 21.3R3-S4; * 21.4 versions prior to 21.4R3-S3; * 22.1 versions prior to 22.1R3-S2; * 22.2 versions prior to 22.2R3; * 22.3 versions prior to 22.3R2-S2; * 22.4 versions prior to 22.4R2; Juniper Networks Junos OS Evolved * All versions prior to 20.4R3-S8-EVO; * 21.1 version 21.1R1-EVO and later versions; * 21.2 versions prior to 21.2R3-S5-EVO; * 21.3 versions prior to 21.3R3-S4-EVO; * 21.4 versions prior to 21.4R3-S3-EVO; * 22.1 versions prior to 22.1R3-S2-EVO; * 22.2 versions prior to 22.2R3-EVO; * 22.3 versions prior to 22.3R2-S2-EVO; * 22.4 versions prior to 22.4R1-S1-EVO;

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Juniper Networks Junos OS

Default version status: unaffected

  • 0 to < 20.4R3-S8affected
  • 21.1R1 to < 21.1*affected
  • 21.2 to < 21.2R3-S5affected
  • 21.3 to < 21.3R3-S4affected
  • 21.4 to < 21.4R3-S3affected
  • 22.1 to < 22.1R3-S2affected
  • 22.2 to < 22.2R3affected
  • 22.3 to < 22.3R2-S2, 22.3R3affected
  • 22.4 to < 22.4R2affected

Juniper Networks Junos OS Evolved

Default version status: unaffected

  • 0 to < 20.4R3-S8-EVOaffected
  • 21.1R1-EVO to < 21.1*-EVOaffected
  • 21.2-EVO to < 21.2R3-S5-EVOaffected
  • 21.3-EVO to < 21.3R3-S4-EVOaffected
  • 21.4-EVO to < 21.4R3-S3-EVOaffected
  • 22.1-EVO to < 22.1R3-S2-EVOaffected
  • 22.2-EVO to < 22.2R3-EVOaffected
  • 22.3-EVO to < 22.3R2-S2-EVO, 22.3R3-EVOaffected
  • 22.4-EVO to < 22.4R1-S1-EVO, 22.4R2-EVOaffected

References