Home/CVE/An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in J-Web of Juniper Netw
CVE

CVE-2021-31385

An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in J-Web of Juniper Netw

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.

HIGH · CVSS 8.8 EPSS 0.00709
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Products & Versions

1
juniper junosall versions
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · sirt@juniper.net
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Oct 2021 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://kb.juniper.net/JSA11253Vendor Advisory
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