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CVE-2021-0287

CVE information

Published

1 year ago

Last Modified

11 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

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..

CVSSv2.0 Score

Severity
Medium
Base Score
5.7/10
Exploit Score
5.5/10
Access Vector
Adjacent_network
Access Complexity
Medium
Authentication Required
None
Impact Score
6.9/10
Confidentiality Impact
None
Availability Impact
Complete
Integrity Impact
None

CVSSv3.1 Score

Severity
Medium
Base Score
6.5/10
Exploit Score
2.8/10
Access Vector
Adjacent_network
Access Complexity
Low
Privileges Required
None
Impact Score
3.6/10
Confidentiality Impact
None
Availability Impact
High
Integrity Impact
None
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r1-s3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r2-s3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:19.4:r3-s1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos_os_evolved:20.3:-:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos_os_evolved:20.3:r1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:*
  Yes
- -