Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-31372

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
19/10/2021
Last modified:
25/10/2021

Description

An Improper Input Validation vulnerability in J-Web of Juniper Networks Junos OS allows a locally authenticated J-Web attacker to escalate their privileges to root over the target device. This issue affects: Juniper Networks Junos OS All versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2;

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.80
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:S/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 9.00 HIGH
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
9.00
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* 18.2 (including)
cpe:2.3:o:juniper:junos:18.3:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r1-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r1-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r1-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r1-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools