Expected behavior violation in Juniper Junos OS

Published: 2019-04-10 | Updated: 2019-05-22

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2019-0036
CWE-ID	CWE-440
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Juniper Junos OS Operating systems & Components / Operating system
Vendor	Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Expected behavior violation

EUVDB-ID: #VU18577

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-0036

CWE-ID: CWE-440 - Expected Behavior Violation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to firewall filter ignores terms using format "internal-n" during configuration. A remote attacker can bypass certain firewall rules and gain unauthorized access to resources.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 1.2 - 18.4R1

External links

http://kb.juniper.net/JSA10925

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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