CVE-2021-31385

Junos OS: J-Web: A path traversal vulnerability allows an authenticated attacker to elevate their privileges to root

State: Published
Severity: 8.8 High
Published: Oct 19, 2021
Updated: Sep 16, 2024
Reserved: Apr 15, 2021

Description

An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in J-Web of Juniper Networks Junos OS allows any low-privileged authenticated attacker to elevate their privileges to root. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S19; 15.1 versions prior to 15.1R7-S10; 18.3 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 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R2-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.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	juniper

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
Junos OSJuniper Networks	12.3 to before 12.3R12-S19Affected
Junos OSJuniper Networks	15.1 to before 15.1R7-S10Affected 18.3 to before 18.3R3-S5Affected 18.4 to before 18.4R3-S9Affected 19.1 to before 19.1R3-S6Affected 19.2 to before 19.2R1-S7, 19.2R3-S3Affected 19.3 to before 19.3R3-S3Affected 19.4 to before 19.4R3-S5Affected 20.1 to before 20.1R2-S2, 20.1R3-S1Affected 20.2 to before 20.2R3-S2Affected 20.3 to before 20.3R3Affected 20.4 to before 20.4R2-S1, 20.4R3Affected 21.1 to before 21.1R1-S1, 21.1R2Affected

Product

Versions

Junos OSJuniper Networks

12.3 to before 12.3R12-S19Affected

Junos OSJuniper Networks

15.1 to before 15.1R7-S10Affected
18.3 to before 18.3R3-S5Affected
18.4 to before 18.4R3-S9Affected
19.1 to before 19.1R3-S6Affected
19.2 to before 19.2R1-S7, 19.2R3-S3Affected
19.3 to before 19.3R3-S3Affected
19.4 to before 19.4R3-S5Affected
20.1 to before 20.1R2-S2, 20.1R3-S1Affected
20.2 to before 20.2R3-S2Affected
20.3 to before 20.3R3Affected
20.4 to before 20.4R2-S1, 20.4R3Affected
21.1 to before 21.1R1-S1, 21.1R2Affected

References

https://kb.juniper.net/JSA11253

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