Vulnerability identifier: #VU47664

Vulnerability risk: Medium

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

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: 12.3 - 12.3R12-S15, 12.3x48 - 12.3X48-D101, 14.1x53 - 14.1X53-D51, 15.1R - 15.1R7-S6, 15.1X49 - 15.1X49-D220, 15.1X49-D210, 15.1X53 - 15.1X53-D592, 16.1R - 16.1R7-S4

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External links
http://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.