What is CVE-2021-0278?

CVE-2021-0278 is a high-severity vulnerability in Juniper Junos, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2021-07-15.

How severe is CVE-2021-0278?

High severity. CVSS v3 base score is 8.8 out of 10.

Improper input validation in Juniper Junos

CVE-2021-0278

An Improper Input Validation vulnerability in J-Web of Juniper Networks Junos OS allows a locally authenticated attacker to escalate their privileges to root over the target device. junos:18.3R3-S5 junos:18.4R3-S9 junos:19.1R3-S6 junos:19.3R2-S6 junos:19.3R3-S3 junos:19.4R1-S4 junos:19.4R3-S4 junos:20.1R2-S2 junos:20.1R3 junos:20.2R3-S1 junos:20.3X75-D20 junos:20.3X75-D30 junos:20.4R2-S1 junos:20.4R3 junos:21.1R1-S1 junos:21.1R2 junos:21.2R1 junos:21.3R1 This issue affects: Juniper Networks Junos OS 19.3 versions 19.3R1 and above prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 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 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.3R1.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.009 (57.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Juniper Junos — versions 19.3, 19.4, 20.1
Juniper Networks Junos Os — versions unspecified, 19.3R1, 19.4

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

sirt@juniper.net (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0278?: CVE-2021-0278 is a high-severity vulnerability in Juniper Junos, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2021-07-15.
How severe is CVE-2021-0278?: High severity. CVSS v3 base score is 8.8 out of 10.