PT-2021-2119 · Juniper Networks · Junos

Published 2021-01-13 · Updated 2021-02-05 · CVE-2021-0218

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS versions 17.3 prior to 17.3R3-S9 Juniper Networks Junos OS versions 17.4 prior to 17.4R2-S12, 17.4R3-S3 Juniper Networks Junos OS versions 18.1 prior to 18.1R3-S11 Juniper Networks Junos OS versions 18.2 prior to 18.2R3-S6 Juniper Networks Junos OS versions 18.3 prior to 18.3R3-S4 Juniper Networks Junos OS versions 18.4 prior to 18.4R3-S6 Juniper Networks Junos OS versions 19.1 prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3 Juniper Networks Junos OS versions 19.2 prior to 19.2R3-S1 Juniper Networks Junos OS versions 19.3 prior to 19.3R2-S5, 19.3R3 Juniper Networks Junos OS versions 19.4 prior to 19.4R2-S2, 19.4R3 Juniper Networks Junos OS versions 20.1 prior to 20.1R1-S4, 20.1R2 Juniper Networks Junos OS versions 20.2 prior to 20.2R1-S2, 20.2R2

Description A command injection vulnerability in the license-check daemon of Juniper Networks Junos OS may allow a locally authenticated attacker with low privileges to execute commands with root privilege. The license-check daemon is used to manage licenses in Junos OS. An attacker with access to the CLI command 'request system license update' may be able to exploit the vulnerability.

Recommendations For Juniper Networks Junos OS versions 17.3 prior to 17.3R3-S9, update to version 17.3R3-S9 or later. For Juniper Networks Junos OS versions 17.4 prior to 17.4R2-S12, 17.4R3-S3, update to version 17.4R2-S12 or 17.4R3-S3 or later. For Juniper Networks Junos OS versions 18.1 prior to 18.1R3-S11, update to version 18.1R3-S11 or later. For Juniper Networks Junos OS versions 18.2 prior to 18.2R3-S6, update to version 18.2R3-S6 or later. For Juniper Networks Junos OS versions 18.3 prior to 18.3R3-S4, update to version 18.3R3-S4 or later. For Juniper Networks Junos OS versions 18.4 prior to 18.4R3-S6, update to version 18.4R3-S6 or later. For Juniper Networks Junos OS versions 19.1 prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3, update to version 19.1R1-S6, 19.1R2-S2, 19.1R3-S3 or later. For Juniper Networks Junos OS versions 19.2 prior to 19.2R3-S1, update to version 19.2R3-S1 or later. For Juniper Networks Junos OS versions 19.3 prior to 19.3R2-S5, 19.3R3, update to version 19.3R2-S5, 19.3R3 or later. For Juniper Networks Junos OS versions 19.4 prior to 19.4R2-S2, 19.4R3, update to version 19.4R2-S2, 19.4R3 or later. For Juniper Networks Junos OS versions 20.1 prior to 20.1R1-S4, 20.1R2, update to version 20.1R1-S4, 20.1R2 or later. For Juniper Networks Junos OS versions 20.2 prior to 20.2R1-S2, 20.2R2, update to version 20.2R1-S2, 20.2R2 or later.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2021-00975

CVE-2021-0218

Affected Products

Junos

References · 6

• https://bdu.fstec.ru/vul/2021-00975 · Security Note
• https://kb.juniper.net/JSA11108 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-0218 · Security Note
• https://osv.dev/vulnerability/CVE-2021-0218 · Vendor Advisory
• https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11108&cat=SIRT_1&actp=LIST · Note
• https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11108&cat=SIRT_1&actp=LIST · Note