Improper control of interaction frequency in Juniper Junos OS

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

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2019-0039
CWE-ID	CWE-799
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Juniper Junos OS Operating systems & Components / Operating system
Vendor	Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper control of interaction frequency

EUVDB-ID: #VU18578

Risk: Medium

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

CVE-ID: CVE-2019-0039

CWE-ID: CWE-799 - Improper Control of Interaction Frequency

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform brute-force attack.

The vulnerability exists due to the high default connection limit of the REST API which does not implement sufficient measures to prevent multiple failed authentication attempts. A remote attacker can brute-force password using advanced scripting techniques.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 14.1X53-D15 - 18.3

CPE2.3

External links

https://www.securityfocus.com/bid/107899
https://kb.juniper.net/JSA10928

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.