Vulnerability identifier: #VU17000

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-0001

CWE-ID: CWE-835

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 cause DoS condition on the target system.

The vulnerability exists due to an uncontrolled recursion loop in the Broadband Edge subscriber management daemon (bbe-smgd) when receipt of a malformed packet on MX Series devices with dynamic vlan configuration. A remote attacker can send trigger high CPU usage and a crash of the bbe-smgd service.

Mitigation
The vulnerability has been addressed in the versions 16.1R7-S1, 16.2R2-S7, 17.1R2-S10, 17.1R3, 17.2R3, 17.3R3-S1, 17.4R2, 18.1R3, 18.2R2, 18.3R1.

Vulnerable software versions

Juniper Junos OS: 18.2 - 18.2R1, 18.1 - 18.1R2, 17.4 - 17.4R1-S3, 17.3 - 17.3R3, 17.2 - 17.2R2-S4, 17.1 - 17.1R2-S7, 16.2 - 16.2R2-S6, 16.1 - 16.1R7

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External links
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10900&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.