Denial of service in Juniper Junos OS

1) Input validation error

EUVDB-ID: #VU47664

Risk: Medium

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

CVE-ID: CVE-2020-1661

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in jdhcp process. A remote attacker can send specially crafted DHCP packet and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 12.3R10 - 16.1R7

CPE2.3

• cpe:2.3:o:juniper_networks:juniper_junos_os:12.3:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:14.1x53:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:15.1X53:*:*:*:*:*:*:*
• cpe:2.3:o:juniper_networks:juniper_junos_os:16.1R7:*:*:*:*:*:*:*

External links

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11056&cat=SIRT_1&actp=LIST

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.