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 Subscribe	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

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

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 - 18.3R1

External links

http://www.securityfocus.com/bid/107899
http://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.