Path traversal in Juniper Junos OS - CVE-2021-31385

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Main Vulnerability Database Vulnerabilities #VU59635

Path traversal in Juniper Junos OS - CVE-2021-31385

Published: January 17, 2022


Vulnerability identifier: #VU59635
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-31385
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Juniper Junos OS
Software vendor:
Juniper Networks, Inc.

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in J-Web. A remote low-privileged user can send a specially crafted HTTP request and read arbitrary files on the system.

Successful vulnerability exploitation may allow an attacker to execute arbitrary code with root privileges.


Remediation

Install update from vendor's website.

External links