CVE-2020-1634

Junos OS: High-End SRX Series: Multicast traffic might cause all FPCs to reset.

Description

On High-End SRX Series devices, in specific configurations and when specific networking events or operator actions occur, an SPC receiving genuine multicast traffic may core. Subsequently, all FPCs in a chassis may reset causing a Denial of Service. This issue affects both IPv4 and IPv6. This issue affects: Juniper Networks Junos OS 12.3X48 version 12.3X48-D80 and later versions prior to 12.3X48-D95 on High-End SRX Series. This issue does not affect Branch SRX Series devices.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 12.3X48-D95, and all subsequent releases.

Workaround:

  • There are no viable workarounds for this issue.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.54%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA11014 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-1634?
CVE-2020-1634 has been scored as a high severity vulnerability.
How to fix CVE-2020-1634?
To fix CVE-2020-1634: The following software releases have been updated to resolve this specific issue: 12.3X48-D95, and all subsequent releases.
Is CVE-2020-1634 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-1634 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-2020-1634?
CVE-2020-1634 affects Juniper Networks Junos OS.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.