CVE-2020-1608

Junos OS: MX Series: In BBE configurations, receipt of a specific MPLS or IPv6 packet causes a Denial of Service

Description

Receipt of a specific MPLS or IPv6 packet on the core facing interface of an MX Series device configured for Broadband Edge (BBE) service may trigger a kernel crash (vmcore), causing the device to reboot. The issue is specific to the processing of packets destined to BBE clients connected to MX Series subscriber management platforms. This issue affects MX Series running Juniper Networks Junos OS: 17.2 versions starting from17.2R2-S6, 17.2R3 and later releases, prior to 17.2R3-S3; 17.3 versions starting from 17.3R2-S4, 17.3R3-S2 and later releases, prior to 17.3R2-S5, 17.3R3-S5; 17.4 versions starting from 17.4R2 and later releases, prior to 17.4R2-S7,17.4R3; 18.1 versions starting from 18.1R2-S3, 18.1R3 and later releases, prior to 18.1R3-S6; 18.2 versions starting from18.2R1-S1, 18.2R2 and later releases, prior to 18.2R3-S2; 18.2X75 versions prior to 18.2X75-D51, 18.2X75-D60; 18.3 versions prior to 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S2, 19.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 17.2R2-S6.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 17.2R3-S3, 17.3R2-S5, 17.3R3-S5, 17.4R2-S7, 17.4R3, 18.1R3-S6, 18.2R3-S2, 18.2X75-D51, 18.2X75-D60, 18.3R3, 18.4R2, 19.1R1-S3, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R1, and all subsequent releases.

Workaround:

  • There are no known workarounds for this issue.
7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.55%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA10987 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-1608?
CVE-2020-1608 has been scored as a high severity vulnerability.
How to fix CVE-2020-1608?
To fix CVE-2020-1608: The following software releases have been updated to resolve this specific issue: 17.2R3-S3, 17.3R2-S5, 17.3R3-S5, 17.4R2-S7, 17.4R3, 18.1R3-S6, 18.2R3-S2, 18.2X75-D51, 18.2X75-D60, 18.3R3, 18.4R2, 19.1R1-S3, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R1, and all subsequent releases.
Is CVE-2020-1608 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-1608 is being actively exploited. 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-2020-1608?
CVE-2020-1608 affects Juniper Networks Junos OS.
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