CVE-2021-31383

CVSS V2 Medium 4.3 CVSS V3 High 7.5
Description
In Point to MultiPoint (P2MP) scenarios within established sessions between network or adjacent neighbors the improper use of a source to destination copy write operation combined with a Stack-based Buffer Overflow on certain specific packets processed by the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved sent by a remote unauthenticated network attacker causes the RPD to crash causing a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1. Juniper Networks Junos OS Evolved 20.1 versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R3-EVO; 20.3 versions prior to 20.3R2-EVO.
Overview
  • CVE ID
  • CVE-2021-31383
  • Assigner
  • sirt@juniper.net
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-10-19T19:15:11
  • Last Modified Date
  • 2021-10-25T17:01:22
Weakness Enumerations
CWE URL
CWE-787 http://cwe.mitre.org/data/definitions/787.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
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:r1-s6:*:*:*:*:*:* 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:19.3:r3-s1:*:*:*:*:*:* 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: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:19.4:r3-s2:*:*:*:*:*:* 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:20.1:r2-s1:*:*:*:*:*:* 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:20.2:r2-s2:*:*:*:*:*:* 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:20.1:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s5:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.2:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.2:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.2:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.2:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.2:r2-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:20.3:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.3:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.3:r1-s3:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://kb.juniper.net/JSA11251 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31383
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31383
History
Created Old Value New Value Data Type Notes
2022-05-10 06:50:00 Added to TrackCVE
2022-12-05 12:44:03 2021-10-19T19:15Z 2021-10-19T19:15:11 CVE Published Date updated
2022-12-05 12:44:03 2021-10-25T17:01:22 CVE Modified Date updated
2022-12-05 12:44:03 Analyzed Vulnerability Status updated