CVE-2019-0046

Junos OS: EX4300 Series: Denial of Service upon receipt of large number of specific valid packets on management interface.

Description

A vulnerability in the pfe-chassisd Chassis Manager (CMLC) daemon of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) to the EX4300 when specific valid broadcast packets create a broadcast storm condition when received on the me0 interface of the EX4300 Series device. A reboot of the device is required to restore service. Continued receipt of these valid broadcast packets will create a sustained Denial of Service (DoS) against the device. Affected releases are Juniper Networks Junos OS: 16.1 versions above and including 16.1R1 prior to 16.1R7-S5; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R3; 17.3 versions prior to 17.3R3-S2; 17.4 versions prior to 17.4R2; 18.1 versions prior to 18.1R3; 18.2 versions prior to 18.2R2.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 16.1R7-S5, 17.1R3, 17.2R3, 17.3R3-S2, 17.4R2, 18.1R3, 18.2R2, 18.3R1, and all subsequent releases.

Workaround:

  • There are no viable workarounds for this issue.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.11%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA10938 patch vendor advisory
http://www.securityfocus.com/bid/109272 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-0046?
CVE-2019-0046 has been scored as a medium severity vulnerability.
How to fix CVE-2019-0046?
To fix CVE-2019-0046: The following software releases have been updated to resolve this specific issue: 16.1R7-S5, 17.1R3, 17.2R3, 17.3R3-S2, 17.4R2, 18.1R3, 18.2R2, 18.3R1, and all subsequent releases.
Is CVE-2019-0046 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-0046 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-0046?
CVE-2019-0046 affects Juniper Networks Junos OS.
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