#VU18577 Expected behavior violation in Juniper Junos OS - CVE-2019-0036


Vulnerability identifier: #VU18577

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-0036

CWE-ID: CWE-440

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Juniper Junos OS
Operating systems & Components / Operating system

Vendor: Juniper Networks, Inc.

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 - 1.2.1, 1.3, 4.0, 4.1, 4.2, 4.3, 4.4, 5.0r3 - 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5, 9.0, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 10.0, 10.1, 10.2, 10.3, 10.4r - 10.4, 11.0, 11.1, 11.2, 11.3, 11.4, 12.1r - 12.1, 12.2x50 - 12.2, 12.3R12 - 12.3, 14.1X53-D15 - 14.1x53, 15.1R - 15.1X53, 16.1R - 16.1R7, 16.2R1-S1 - 16.2, 17.1R1-S1 - 17.1, 17.2R1-S1 - 17.2R1, 17.3R1-S1 - 17.3, 17.4R1-S1 - 17.4, 18.1R1 - 18.1, 18.2R1-S3 - 18.2X75-D10, 18.3R1-S1 - 18.3, 18.4R1

External links
https://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.


Latest bulletins with this vulnerability


Expected behavior violation in Juniper Junos OS