CVE-2021-31385
Last modified
CVE-2021-31385 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 1.46% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Juniper | Junos | 12.3 | — |
| Juniper | Junos | 15.1 | — |
| Juniper | Junos | 18.3 | — |
| Juniper | Junos | 18.4 | — |
| Juniper | Junos | 19.1 | — |
| Juniper | Junos | 19.2 | — |
| Juniper | Junos | 19.3 | — |
| Juniper | Junos | 19.4 | R1 |
| Juniper | Junos | 20.1 | R1 |
| Juniper | Junos | 20.2 | R1 |
| Juniper | Junos | 20.3 | R1 |
| Juniper | Junos | 20.4 | R1 |
| Juniper | Junos | 21.1 | R1 |
References
- https://kb.juniper.net/JSA11253Vendor Advisory
- https://kb.juniper.net/JSA11253Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-31385?
How severe is CVE-2021-31385?
How do I fix CVE-2021-31385?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-3138In Discourse 2.7.0 through beta1, a rate-limit bypass leads …7.5
- CVE-2021-31380A configuration weakness in the JBoss Application Server (Ap…5.3
- CVE-2021-31381A configuration weakness in the JBoss Application Server (Ap…9.1
- CVE-2021-31382On PTX1000 System, PTX10002-60C System, after upgrading to a…9
- CVE-2021-31383In Point to MultiPoint (P2MP) scenarios within established s…7.5
- CVE-2021-31384Due to a Missing Authorization weakness and Insufficient Gra…10
- CVE-2021-31386A Protection Mechanism Failure vulnerability in the J-Web HT…5.9
- CVE-2021-3139In Open-iSCSI tcmu-runner 1.3.x, 1.4.x, and 1.5.x through 1.…8.1
- CVE-2021-31399On 2N Access Unit 2.0 2.31.0.40.5 devices, an attacker can p…5.9
- CVE-2021-31400An issue was discovered in tcp_pulloutofband() in tcp_in.c i…7.5
- CVE-2021-31401An issue was discovered in tcp_rcv() in nptcp.c in HCC embed…7.5
- CVE-2021-31402The dio package 4.0.0 for Dart allows CRLF injection if the …7.5
Are you affected by CVE-2021-31385?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST