#VU47664 Input validation error in Juniper Junos OS - CVE-2020-1661

Vulnerability identifier: #VU47664

Vulnerability 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

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 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 - 12.3, 14.1X53-D15 - 14.1x53, 15.1R - 15.1X53, 16.1R - 16.1R7

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

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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.