#VU18542 Improper access control in Juniper Junos OS - CVE-2019-0040

Vulnerability identifier: #VU18542

Vulnerability risk: Medium

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

CVE-ID: CVE-2019-0040

CWE-ID: CWE-284

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 gain unauthorized access to sensitive information.

The vulnerability exists due to improper access restrictions within the port 111 on the internal routing instance. A remote unauthenticated attacker can gain access to sensitive information and perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 15.1F - 15.1X53, 16.1R - 16.1R7, 16.2R1-S1 - 16.2R3, 17.1R1-S1 - 17.1, 17.2R1-S1 - 17.2R1, 17.3R1-S1 - 17.3, 17.4R1-S1 - 17.4

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External links
https://www.securityfocus.com/bid/107902
https://kb.juniper.net/JSA10929

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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.