CVE-2021-0236

CVSS V2 Medium 6.8 CVSS V3 Medium 6.5
Description
Due to an improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved the Routing Protocol Daemon (RPD) service, upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration, crashes and restarts causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec deployments. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: All versions after 18.4R1-EVO prior to 20.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved versions prior to 18.4R1-EVO.
Overview
  • CVE ID
  • CVE-2021-0236
  • Assigner
  • sirt@juniper.net
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-22T20:15:08
  • Last Modified Date
  • 2021-04-27T15:01:11
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:18.4:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s6:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r1-s7:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r2-s6:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3-s6:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r1-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r3-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r1-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r3-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r2-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r2-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r2-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r3:*:*:*:*:*:* 1 OR
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: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: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:20.2: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:20.3:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:19.1:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:19.1:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:19.2:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:19.2:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:19.3:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:19.3:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r1:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 6.8
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • 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/JSA11131 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-0236
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-0236
History
Created Old Value New Value Data Type Notes
2022-05-10 07:14:04 Added to TrackCVE
2022-12-06 02:18:42 2021-04-22T20:15Z 2021-04-22T20:15:08 CVE Published Date updated
2022-12-06 02:18:42 2021-04-27T15:01:11 CVE Modified Date updated
2022-12-06 02:18:42 Analyzed Vulnerability Status updated