CVE-2020-1678

Junos OS and Junos OS Evolved: RPD can crash due to a slow memory leak.

Description

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. root@device> show task memory detail | match policy | match evpn ------------------------ Allocator Memory Report ------------------------ Name | Size | Alloc DTXP Size | Alloc Blocks | Alloc Bytes | MaxAlloc Blocks | MaxAlloc Bytes Policy EVPN Params 20 24 3330678 79936272 3330678 79936272 root@device> show task memory detail | match policy | match evpn ------------------------ Allocator Memory Report ------------------------ Name | Size | Alloc DTXP Size | Alloc Blocks | Alloc Bytes | MaxAlloc Blocks | MaxAlloc Bytes Policy EVPN Params 20 24 36620255 878886120 36620255 878886120 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.

Remediation

Solution:

  • 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.

Workaround:

  • There are no viable workarounds for this issue.

Categories

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS Evolved
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA11075 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-1678?
CVE-2020-1678 has been scored as a medium severity vulnerability.
How to fix CVE-2020-1678?
To fix 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.
Is CVE-2020-1678 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-1678 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-1678?
CVE-2020-1678 affects Juniper Networks Junos OS, Juniper Networks Junos OS Evolved.
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.