CVE-2021-31354

CVSS V2 Medium 5.4 CVSS V3 High 8.8
Description
An Out Of Bounds (OOB) access vulnerability in the handling of responses by a Juniper Agile License (JAL) Client in Juniper Networks Junos OS and Junos OS Evolved, configured in Network Mode (to use Juniper Agile License Manager) may allow an attacker to cause a partial Denial of Service (DoS), or lead to remote code execution (RCE). The vulnerability exists in the packet parsing logic on the client that processes the response from the server using a custom protocol. An attacker with control of a JAL License Manager, or with access to the local broadcast domain, may be able to spoof a new JAL License Manager and/or craft a response to the Junos OS License Client, leading to exploitation of this vulnerability. This issue only affects Junos systems configured in Network Mode. Systems that are configured in Standalone Mode (the default mode of operation for all systems) are not vulnerable to this issue. This issue affects: Juniper Networks Junos OS: 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS Evolved: version 20.1R1-EVO and later versions, prior to 21.2R2-EVO. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1.
Overview
  • CVE ID
  • CVE-2021-31354
  • Assigner
  • sirt@juniper.net
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-10-19T19:15:08
  • Last Modified Date
  • 2021-10-25T21:52:14
Weakness Enumerations
CWE URL
CWE-125 http://cwe.mitre.org/data/definitions/125.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:19.2: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:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3:r3-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:19.3: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:20.1: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:r2-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.2:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.2:r3-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:20.3:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.3:r2-s1:*:*:*:*:*:* 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:20.4:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:21.1:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos:21.1: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:20.1: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:20.1:r3:*:*:*:*:*:* 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:20.2:r3:*:*:*:*:*:* 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
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:20.4:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r3:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:20.4:r3-s1:*:*:*:*:*:* 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:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:21.1:r1-s1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:21.1:r2:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:* 1 OR
cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:M/Au:N/C:P/I:P/A:P
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5.4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 5.5
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • 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/JSA11219 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31354
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31354
History
Created Old Value New Value Data Type Notes
2022-05-10 06:49:56 Added to TrackCVE
2022-12-05 12:41:14 2021-10-19T19:15Z 2021-10-19T19:15:08 CVE Published Date updated
2022-12-05 12:41:14 2021-10-25T21:52:14 CVE Modified Date updated
2022-12-05 12:41:14 Analyzed Vulnerability Status updated