#VU27430 Path traversal in Juniper Junos OS - CVE-2020-1631
Published: April 29, 2020 / Updated: March 25, 2022
Vulnerability identifier: #VU27430
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Green
CVE-ID: CVE-2020-1631
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Juniper Junos OS
Juniper Junos OS
Software vendor:
Juniper Networks, Inc.
Juniper Networks, Inc.
Description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the HTTP/HTTPS service used by J-Web. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Note: Using this vulnerability, an attacker may be able to inject commands into the httpd.log, read files with "world" readable file permission or obtain J-Web session tokens.
Remediation
Vendor recommends to update to the following fixed releases available for customer download: 12.3X48-D101, 15.1X49-D211, 18.2R3-S4, 18.4R3-S2, and 20.1R1-S1, the remaining fixed releases will be available in future time.