CVE-2019-0046

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

MEDIUM

6.5

CVSS Score

Published: July 11, 2019 at 07:40 PM UTC

Updated: June 17, 2026 at 02:07 AM UTC

1 product affected across 1 vendorJunos

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.7%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

v < 16.1R7-S5v < 17.1R3v < 17.2R3v < 17.3R3-S2v < 17.4R2v < 18.1R3v < 18.2R216.1 16.1 r1 16.1 r2 16.1 r3 16.1 r3-s10 16.1 r3-s11 16.1 r4 16.1 r5 16.1 r6 16.1 r6-s6 17.1 17.1 r1 17.1 r2-s1 17.1 r2-s10 17.1 r2-s2 17.1 r2-s3 17.1 r2-s4 17.1 r2-s5 17.1 r2-s6 17.1 r2-s7 17.2 17.2 r1 17.2 r1-s2 17.2 r1-s4 17.2 r1-s7 17.2 r2 17.2 r2-s6 17.2 r2-s7 17.3 17.3 r1 17.3 r2 17.3 r2-s1 17.3 r2-s2 17.3 r3-s1 17.4 17.4 r1 17.4 r1-s1 17.4 r1-s2 17.4 r1-s4 17.4 r1-s6 17.4 r1-s7 17.4 r2 17.4 r2-s1 17.4 r2-s2 17.4 r2-s3 17.4 r2-s4 18.1 18.1 r1 18.1 r2 18.1 r2-s1 18.1 r2-s2 18.1 r3-s2 18.1 r3-s3 18.1 r3-s4 18.1 r3-s5 18.2 18.2 r2-s1 18.2 r2-s2 18.2 r2-s3 18.2 r2-s4

Affected range stops below 16.1R7-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.1R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.2R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.3R3-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 17.4R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.1R3, so it looks safe — our inference, not a vendor statement

Affected range stops below 18.2R2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://kb.juniper.net/JSA10938

References (2)

VDB Entryx_refsource_BIDThird Party Advisory

Source: [email protected]

http://www.securityfocus.com/bid/109272

x_refsource_CONFIRMPatchVendor Advisory

Source: [email protected]

https://kb.juniper.net/JSA10938

CVSS

6.5MEDIUM[email protected]

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-400

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