CVE-2019-0001

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

Description

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.

Remediation

Solution:

  • 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.

Workaround:

  • There are no viable workarounds for this issue.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.02% Top 25%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA10900 vendor advisory
http://www.securityfocus.com/bid/106541 third party advisory vdb entry
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMKFSHPMOZL7MDWU5RYOTIBTRWSZ4Z6X/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W7CPKBW4QZ4VIY4UXIUVUSHRJ4R2FROE/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-0001?
CVE-2019-0001 has been scored as a high severity vulnerability.
How to fix CVE-2019-0001?
To fix CVE-2019-0001: 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.
Is CVE-2019-0001 being actively exploited in the wild?
It is possible that CVE-2019-0001 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-0001?
CVE-2019-0001 affects Juniper Networks Junos OS.
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