CVE-2021-0298

Junos OS Evolved: PTX10003, PTX10008: picd core while executing the "show chassis pic" command under certain conditions

Description

A Race Condition in the 'show chassis pic' command in Juniper Networks Junos OS Evolved may allow an attacker to crash the port interface concentrator daemon (picd) process on the FPC, if the command is executed coincident with other system events outside the attacker's control, leading to a Denial of Service (DoS) condition. Continued execution of the CLI command, under precise conditions, could create a sustained Denial of Service (DoS) condition. This issue affects all Juniper Networks Junos OS Evolved versions prior to 20.1R2-EVO on PTX10003 and PTX10008 platforms. Junos OS is not affected by this vulnerability.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.1R2-EVO, 20.2R1-EVO, and all subsequent releases.

Workaround:

  • Use access lists or firewall filters to limit access to the router via CLI only from trusted hosts and from trusted administrators.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS Evolved
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA11212 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-0298?
CVE-2021-0298 has been scored as a medium severity vulnerability.
How to fix CVE-2021-0298?
To fix CVE-2021-0298: The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.1R2-EVO, 20.2R1-EVO, and all subsequent releases.
Is CVE-2021-0298 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-0298 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-2021-0298?
CVE-2021-0298 affects Juniper Networks Junos OS Evolved.
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