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CVE-2021-0287 PUBLISHED CVSS 6.5 MEDIUM

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.

EPSS 0.08% · 22.6th percentile

Risk Scores

CVSS v3.1
6.5
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.08%
22.6th percentile

Affected Products

VendorProductVersions
Juniper NetworksJunos OS Evolved19.4R1-EVO, 20.1R1-EVO, 20.2R1-EVO
juniperjunos19.4, 19.4, 19.4
Juniper NetworksJunos OSunspecified, 19.4R1, 20.1
juniperjunos_os_evolved20.3, 20.3, 20.4

Timeline

References

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