PT-2021-12962 · Juniper Networks · Junos

Loic Restoux + 1 · Published 2021-04-22 · Updated 2022-05-12 · CVE-2021-0252

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 on NFX Series versions 18.1R1 through 18.2R3-S5 Juniper Networks Junos OS on NFX Series versions 18.3 through 18.3R3-S3 Juniper Networks Junos OS on NFX Series versions 18.4 through 18.4R3-S4 Juniper Networks Junos OS on NFX Series versions 19.1 through 19.1R2 Juniper Networks Junos OS on NFX Series versions 19.2 through 19.2R2

Description: The issue affects Juniper Networks Junos OS on NFX Series devices, allowing an attacker to elevate their privileges via the Junos Device Management Daemon (JDMD) process. This is a local code execution issue. The JDMD as used by Junos Node Slicing, such as External Servers and In-Chassis Junos Node Slicing on certain MX series devices, is not affected.

Recommendations: For versions 18.1R1 through 18.2R3-S5, update to version 18.2R3-S5 or later. For versions 18.3 through 18.3R3-S3, update to version 18.3R3-S3 or later. For versions 18.4 through 18.4R3-S4, update to version 18.4R3-S4 or later. For versions 19.1 through 19.1R2, update to version 19.1R2 or later. For versions 19.2 through 19.2R2, update to version 19.2R2 or later.

Exploit

Fix

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

CVE-2021-0252

GHSA-GR7J-26PV-5V57

Affected Products

Junos

References · 5

• 🔥 https://github.com/orangecertcc/security-research/security/advisories/GHSA-gr7j-26pv-5v57 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-0252 · Security Note
• https://kb.juniper.net/JSA11145 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-0252 · Vendor Advisory
• https://t.me/cvenotify/13813 · Telegram Post