CVE-2021-0287

CVSS V2 Medium 5.7 CVSS V3 Medium 6.5
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.
Overview
  • CVE ID
  • CVE-2021-0287
  • Assigner
  • sirt@juniper.net
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-07-15T20:15:10
  • Last Modified Date
  • 2021-10-25T15:20:19
Weakness Enumerations
CWE URL
CWE-754 http://cwe.mitre.org/data/definitions/754.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r1-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r2-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r3-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.3:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.3:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:M/Au:N/C:N/I:N/A:C
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 5.7
  • Severity
  • MEDIUM
  • Exploitability Score
  • 5.5
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://kb.juniper.net/JSA11189 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-0287
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0287
History
Created Old Value New Value Data Type Notes
2022-05-10 06:50:03 Added to TrackCVE
2022-12-05 06:18:17 2021-07-15T20:15Z 2021-07-15T20:15:10 CVE Published Date updated
2022-12-05 06:18:17 2021-10-25T15:20:19 CVE Modified Date updated
2022-12-05 06:18:17 Analyzed Vulnerability Status updated