Product Affected

This issue affects all versions of Junos OS Evolved. Affected platforms: PTX10003, PTX10008.
Medium
4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)

Problem

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.


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

This issue was found during internal product security testing or research.

This issue has been assigned  CVE-2021-0298 .
 

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.

This issue is being tracked as  1497285 .
 

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

Workaround

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

 

Severity Assessment

Information for how Juniper Networks uses CVSS can be found at KB 16446 [juniper.net] "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

Modification History

2021-10-13: Initial Publication.

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