On Juniper Networks Junos OS and Junos OS Evolved platforms with EVPN configured, receipt of specific BGP packets causes a slow memory leak. If the memory is exhausted the rpd process might crash.

If the issue occurs, the memory leak could be seen by executing the "show task memory detail | match policy | match evpn" command multiple times to check if memory (Alloc Blocks value) is increasing.

This issue affects:

Juniper Networks Junos OS

• 19.4 versions prior to 19.4R2;
• 20.1 versions prior to 20.1R1-S4, 20.1R2;

Juniper Networks Junos OS Evolved:

• 19.4 versions;
• 20.1 versions prior to 20.1R1-S4-EVO, 20.1R2-EVO;
• 20.2 versions prior to 20.2R1-EVO;

This issue does not affect:

Juniper Networks Junos OS releases prior to 19.4R1.

Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO.

The example of the configuration stanza affected by this issue is as follows:

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was seen during production usage.

This issue has been assigned CVE-2020-1678 .

The following software releases have been updated to resolve this specific issue:

Junos OS: 19.4R2, 19.4R3, 20.1R1-S4, 20.1R2, 20.2R1 and all subsequent releases.

Junos OS Evolved: 20.1R1-S4-EVO, 20.1R2-EVO, 20.2R1-EVO, and all subsequent releases.

This issue is being tracked as 1490269 .

Software releases or updates are available for download at https://www.juniper.net/support/downloads/ .

There are no viable workarounds for this issue.

2020-10-14: Initial Publication.

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• CVE-2020-1678 at cve.mitre.org