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AUSCERT External Security Bulletin Redistribution
ESB-2021.3428
JSA11212 - 2021-10 Security Bulletin: Junos OS Evolved: PTX10003, PTX10008:
picd core while executing the "show chassis pic" command
under certain conditions (CVE-2021-0298)
15 October 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Junos OS Evolved
Publisher: Juniper Networks
Operating System: Juniper
Impact/Access: Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-0298
Original Bulletin:
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11212
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2021-10 Security Bulletin: Junos OS Evolved: PTX10003, PTX10008: picd core while executing the "show chassis pic" command under certain conditions (CVE-2021-0298)
Article ID : JSA11212
Last Updated: 13 Oct 2021
Version : 1.0
Product Affected:
This issue affects all versions of Junos OS Evolved. Affected platforms:
PTX10003, PTX10008.
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 .
Workaround:
Use access lists or firewall filters to limit access to the router via CLI only
from trusted hosts and from trusted administrators.
Implementation:
Software releases or updates are available for download at https://
support.juniper.net/support/downloads/
Modification History:
2021-10-13: Initial Publication.
CVSS Score:
4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
Severity Level:
Medium
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common
Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."
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