CVE-2019-0001: Junos OS: MX Series: uncontrolled recursion and crash in Broadband Edge subscriber management daemon (bbe-smgd).

Published Jan 15, 2019

Updated

Receipt of a malformed packet on MX Series devices with dynamic vlan configuration can trigger an uncontrolled recursion loop in the Broadband Edge subscriber management daemon (bbe-smgd), and lead to high CPU usage and a crash of the bbe-smgd service. Repeated receipt of the same packet can result in an extended denial of service condition for the device. Affected releases are Juniper Networks Junos OS: 16.1 versions prior to 16.1R7-S1; 16.2 versions prior to 16.2R2-S7; 17.1 versions prior to 17.1R2-S10, 17.1R3; 17.2 versions prior to 17.2R3; 17.3 versions prior to 17.3R3-S1; 17.4 versions prior to 17.4R2; 18.1 versions prior to 18.1R3; 18.2 versions prior to 18.2R2.

Affected Software

75 affected components

Juniper Junos=16.1

Juniper Junos=16.1-r1

Juniper Junos=16.1-r2

Juniper Junos=16.1-r3

Juniper Junos=16.1-r3-s10

Juniper Junos=16.1-r3-s11

Juniper Junos=16.1-r4

Juniper Junos=16.1-r4-s12

Juniper Junos=16.1-r4-s2

Juniper Junos=16.1-r4-s3

Juniper Junos=16.1-r4-s4

Juniper Junos=16.1-r4-s6

Juniper Junos=16.1-r5

Juniper Junos=16.1-r5-s4

Juniper Junos=16.1-r6

Juniper Junos=16.1-r6-s1

Juniper Junos=16.1-r6-s6

Juniper Junos=16.1-r7

Juniper Junos=16.2

Juniper Junos=16.2-r1

Juniper Junos=16.2-r2

Juniper Junos=16.2-r2-s1

Juniper Junos=16.2-r2-s2

Juniper Junos=16.2-r2-s5

Juniper Junos=16.2-r2-s6

Juniper Junos=17.1

Juniper Junos=17.1-r1

Juniper Junos=17.1-r2

Juniper Junos=17.1-r2-s1

Juniper Junos=17.1-r2-s2

Juniper Junos=17.1-r2-s3

Juniper Junos=17.1-r2-s4

Juniper Junos=17.1-r2-s5

Juniper Junos=17.1-r2-s6

Juniper Junos=17.1-r2-s7

Juniper Junos=17.1-r2-s8

Juniper Junos=17.1-r2-s9

Juniper Junos=17.2

Juniper Junos=17.2-r1

Juniper Junos=17.2-r1-s1

Juniper Junos=17.2-r1-s2

Juniper Junos=17.2-r1-s3

Juniper Junos=17.2-r1-s4

Juniper Junos=17.2-r1-s5

Juniper Junos=17.2-r1-s7

Juniper Junos=17.2-r1-s8

Juniper Junos=17.2-r2

Juniper Junos=17.2-r2-s11

Juniper Junos=17.2-r2-s6

Juniper Junos=17.2-r2-s7

Juniper Junos=17.3

Juniper Junos=17.3-r1

Juniper Junos=17.3-r1-s1

Juniper Junos=17.3-r2

Juniper Junos=17.3-r2-s1

Juniper Junos=17.3-r2-s2

Juniper Junos=17.3-r2-s3

Juniper Junos=17.3-r2-s4

Juniper Junos=17.3-r2-s5

Juniper Junos=17.3-r3

Juniper Junos=17.4

Juniper Junos=17.4-r1

Juniper Junos=17.4-r1-s1

Juniper Junos=17.4-r1-s2

Juniper Junos=17.4-r1-s4

Juniper Junos=17.4-r1-s5

Juniper Junos=17.4-r1-s6

Juniper Junos=17.4-r1-s7

Juniper Junos=18.2

Juniper Junos=18.2-r1

Juniper Junos=18.2-r1-s3

Juniper Junos=18.2-r1-s4

Juniper Junos=18.2-r1-s5

fedoraproject fedora=30

fedoraproject fedora=31

Remediation

Information

The following Junos OS releases have been updated to resolve this specific issue: 16.1R7-S1, 16.2R2-S7, 17.1R2-S10, 17.1R3, 17.2R3, 17.3R3-S1, 17.4R2, 18.1R3, 18.2R2, 18.3R1, and all subsequent releases.

Event History

Jan 15, 2019

CVE Published

via MITRE·09:00 PM

Data Sourced

via MITRE·09:00 PM

RemedyDescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2019-0001?

CVE-2019-0001 has a severity rating that indicates it can lead to high CPU usage and potential crashes of the affected service.

How do I fix CVE-2019-0001?

To mitigate CVE-2019-0001, users should upgrade to the latest fixed versions of Juniper Junos.

What products are affected by CVE-2019-0001?

CVE-2019-0001 affects multiple versions of Juniper Junos from versions 16.1 through 18.2.

What should I monitor to detect CVE-2019-0001 attempts?

Monitor for malformed packets targeting MX Series devices which could trigger the vulnerability described by CVE-2019-0001.

Is CVE-2019-0001 related to a specific configuration setting?

Yes, CVE-2019-0001 is specifically related to dynamic VLAN configurations on MX Series devices.