Vulnerability identifier: #VU18536

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-0031

CWE-ID: CWE-399

Exploitation vector: Local 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 an error configuration within the jdhcpd daemon when receiving specific IPv6 DHCP packets. A remote attacker in a local network can exploit this issue to cause a denial of service condition, effectively denying service to legitimate users.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 17.4 - 17.4R1, 18.1 - 18.1R1

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External links
http://www.securityfocus.com/bid/107874
http://kb.juniper.net/JSA10920

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.