CVE-2021-0298 : A Race Condition in the 'show chassis pic' command in Juniper Networks Junos OS Evolved may allow an attacker to crash t

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.

Published 2021-10-19 19:15:08

Updated 2021-10-25 14:38:14

Source Juniper Networks, Inc.

View at NVD, CVE.org

Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2021-0298

EPSS FAQ

0.04%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 10 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-0298

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.0	MEDIUM	AV:L/AC:H/Au:N/C:N/I:N/A:C	1.9	6.9	NIST
Access Vector: Local Access Complexity: High Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
4.7	MEDIUM	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H	1.0	3.6	Juniper Networks, Inc.
Attack Vector: Local Attack Complexity: High Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2021-0298

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

Assigned by:

nvd@nist.gov (Primary)
sirt@juniper.net (Secondary)

References for CVE-2021-0298

https://kb.juniper.net/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) - Juniper Networks
Vendor Advisory

Products affected by CVE-2021-0298

Juniper » Junos Os Evolved » Version: 19.1 Update R1
cpe:2.3:o:juniper:junos_os_evolved:19.1:r1:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 19.1 Update R2
cpe:2.3:o:juniper:junos_os_evolved:19.1:r2:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 19.2 Update R1
cpe:2.3:o:juniper:junos_os_evolved:19.2:r1:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 19.2 Update R2
cpe:2.3:o:juniper:junos_os_evolved:19.2:r2:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 19.3 Update R1
cpe:2.3:o:juniper:junos_os_evolved:19.3:r1:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 19.3 Update R2
cpe:2.3:o:juniper:junos_os_evolved:19.3:r2:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 20.1 Update R1
cpe:2.3:o:juniper:junos_os_evolved:20.1:r1:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 20.1 Update R1-s1
cpe:2.3:o:juniper:junos_os_evolved:20.1:r1-s1:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 18.3 Update R1
cpe:2.3:o:juniper:junos_os_evolved:18.3:r1:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 19.4 Update R1
cpe:2.3:o:juniper:junos_os_evolved:19.4:r1:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A
Juniper » Junos Os Evolved » Version: 19.4 Update R1-s1
cpe:2.3:o:juniper:junos_os_evolved:19.4:r1-s1:*:*:*:*:*:*
Matching versions
When used together with: Juniper » Ptx10003 » Version: N/A
When used together with: Juniper » Ptx10008 » Version: N/A

Vulnerability Details : CVE-2021-0298

Exploit prediction scoring system (EPSS) score for CVE-2021-0298

CVSS scores for CVE-2021-0298

CWE ids for CVE-2021-0298

References for CVE-2021-0298

Products affected by CVE-2021-0298