CVE-2021-31350

CVSS V2 High 9 CVSS V3 High 8.8
Description
An Improper Privilege Management vulnerability in the gRPC framework, used by the Juniper Extension Toolkit (JET) API on Juniper Networks Junos OS and Junos OS Evolved, allows a network-based, low-privileged authenticated attacker to perform operations as root, leading to complete compromise of the targeted system. The issue is caused by the JET service daemon (jsd) process authenticating the user, then passing configuration operations directly to the management daemon (mgd) process, which runs as root. This issue affects Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S8, 18.4R3-S8; 19.1 versions prior to 19.1R2-S3, 19.1R3-S5; 19.2 versions prior to 19.2R1-S7, 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-S1, 20.3R3; 20.4 versions prior to 20.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1-EVO versions prior to 21.1R2-EVO.
Overview
  • CVE ID
  • CVE-2021-31350
  • Assigner
  • sirt@juniper.net
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-10-19T19:15:08
  • Last Modified Date
  • 2021-10-25T12:58:38
Weakness Enumerations
CWE URL
CWE-269 http://cwe.mitre.org/data/definitions/269.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-s8:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:18.4:r3-s8:*:*:*:*:*:* 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:r1-s6:*:*:*:*:*:* 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:r2-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.1:r3-s5:*:*:*:*:*:* 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:r1-s6:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.2:r3-s2:*:*:*:*:*:* 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-s2:*:*:*:*:*:* 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-s4:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.4:r3-s3:*:*:*:*:*:* 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:20.1:r3:*:*:*:*:*:* 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:20.2:r3:*:*:*:*:*:* 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:20.3:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.3:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.4:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.4:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:18.3: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:19.4:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:19.4:r1-s1:*:*:*:*:*:* 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:20.2: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:20.3: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:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:21.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:21.1:r1-s1:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9
  • Severity
  • HIGH
  • Exploitability Score
  • 8
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://kb.juniper.net/JSA11215 Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31350
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31350
History
Created Old Value New Value Data Type Notes
2022-05-10 06:50:04 Added to TrackCVE
2022-12-05 12:40:55 2021-10-19T19:15Z 2021-10-19T19:15:08 CVE Published Date updated
2022-12-05 12:40:55 2021-10-25T12:58:38 CVE Modified Date updated
2022-12-05 12:40:55 Analyzed Vulnerability Status updated