Input validation error in Juniper Junos OS



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-0046
CWE-ID CWE-20
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 Juniper Junos OS
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU19143

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-0046

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists in the pfe-chassisd Chassis Manager (CMLC) daemon when specific valid broadcast packets create a broadcast storm condition when received on the me0 interface. An attacker can perform a denial of service attack on the affected device.

This issue only affects the EX4300 switch.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 16.1R3-S1 - 18.2R1

CPE2.3 External links

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10938&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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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