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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2021-0287

Junos OS and Junos OS Evolved: RPD could crash in SR-ISIS/MPLS environment due to a flap of an ISIS link in the network

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Status
Published
Published
Updated
Assigning organization
juniper

Description

In a Segment Routing ISIS (SR-ISIS)/MPLS environment, on Juniper Networks Junos OS and Junos OS Evolved devices, configured with ISIS Flexible Algorithm for Segment Routing and sensor-based statistics, a flap of a ISIS link in the network, can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued link flaps will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 19.4 versions prior to 19.4R1-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; Juniper Networks Junos OS Evolved: 20.3-EVO versions prior to 20.3R2-EVO; 20.4-EVO versions prior to 20.4R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-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

  • unspecified to < 19.4R1unaffected
  • 19.4R1 to < 19.4*affected
  • 20.1 to < 20.1R2-S1, 20.1R3affected
  • 20.2 to < 20.2R2-S2, 20.2R3affected
  • 20.3 to < 20.3R2affected

Juniper Networks Junos OS Evolved

  • unspecified to < 19.4R1-EVOunaffected
  • 19.4R1-EVO to < 19.4*affected
  • 20.1R1-EVO to < 20.1*affected
  • 20.2R1-EVO to < 20.2*affected
  • 20.3 to < 20.3R2-EVOaffected
  • 20.4 to < 20.4R2-EVOaffected

References