Path traversal in Juniper Junos OS

1) Path traversal

EUVDB-ID: #VU24186

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

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: 12.3 - 19.1R1-S3

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.