Path traversal in Juniper Junos OS

1) Path traversal

EUVDB-ID: #VU24186

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-1606

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

Exploit availability: No

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. A remote authenticated J-web user can send a specially crafted HTTP request and read files with "world" readable permission and delete files with "world" writeable permission.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Juniper Junos OS: 12.3R10 - 19.1R1

CPE2.3

• cpe:2.3:o:juniper_networks:juniper_junos_os:12.3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:14.1x53:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:15.1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:16.1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:16.2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:17.1:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:17.2:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:17.3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:17.4:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:18.1:*:*:*:*:*:*:*

External links

http://jvn.jp/en/jp/JVN07375820/index.html
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10985&actp=METADATA

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.