CVE-2021-1361 : A vulnerability in the implementation of an internal file management service for

A vulnerability in the implementation of an internal file management service for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode that are running Cisco NX-OS Software could allow an unauthenticated, remote attacker to create, delete, or overwrite arbitrary files with root privileges on the device. This vulnerability exists because TCP port 9075 is incorrectly configured to listen and respond to external connection requests. An attacker could exploit this vulnerability by sending crafted TCP packets to an IP address that is configured on a local interface on TCP port 9075. A successful exploit could allow the attacker to create, delete, or overwrite arbitrary files, including sensitive files that are related to the device configuration. For example, the attacker could add a user account without the device administrator knowing.

Published 2021-02-24 20:15:13

Updated 2021-03-05 18:10:18

Source Cisco Systems, Inc.

View at NVD, CVE.org

Products affected by CVE-2021-1361

Cisco » Nx-os » Version: 9.3(5)
cpe:2.3:o:cisco:nx-os:9.3\(5\):*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Nexus 3000 » Version: N/A
When used together with: Cisco » Nexus 3100 » Version: N/A
When used together with: Cisco » Nexus 3100-z » Version: N/A
When used together with: Cisco » Nexus 3100v » Version: N/A
When used together with: Cisco » Nexus 3200 » Version: N/A
When used together with: Cisco » Nexus 3400 » Version: N/A
When used together with: Cisco » Nexus 3500 » Version: N/A
When used together with: Cisco » Nexus 3600 » Version: N/A
When used together with: Cisco » Nexus 9000v » Version: N/A
When used together with: Cisco » Nexus 92160yc-x » Version: N/A
When used together with: Cisco » Nexus 92300yc » Version: N/A
When used together with: Cisco » Nexus 92304qc » Version: N/A
When used together with: Cisco » Nexus 92348gc-x » Version: N/A
When used together with: Cisco » Nexus 9236c » Version: N/A
When used together with: Cisco » Nexus 9272q » Version: N/A
When used together with: Cisco » Nexus 93108tc-ex » Version: N/A
When used together with: Cisco » Nexus 93108tc-ex-24 » Version: N/A
When used together with: Cisco » Nexus 93108tc-fx » Version: N/A
When used together with: Cisco » Nexus 93108tc-fx-24 » Version: N/A
When used together with: Cisco » Nexus 93120tx » Version: N/A
When used together with: Cisco » Nexus 93128tx » Version: N/A
When used together with: Cisco » Nexus 9316d-gx » Version: N/A
When used together with: Cisco » Nexus 93180lc-ex » Version: N/A
When used together with: Cisco » Nexus 93180yc-ex » Version: N/A
When used together with: Cisco » Nexus 93180yc-ex-24 » Version: N/A
When used together with: Cisco » Nexus 93180yc-fx » Version: N/A
When used together with: Cisco » Nexus 93180yc-fx-24 » Version: N/A
When used together with: Cisco » Nexus 93180yc-fx3 » Version: N/A
When used together with: Cisco » Nexus 93180yc-fx3s » Version: N/A
When used together with: Cisco » Nexus 93216tc-fx2 » Version: N/A
When used together with: Cisco » Nexus 93240yc-fx2 » Version: N/A
When used together with: Cisco » Nexus 9332c » Version: N/A
When used together with: Cisco » Nexus 9332pq » Version: N/A
When used together with: Cisco » Nexus 93360yc-fx2 » Version: N/A
When used together with: Cisco » Nexus 9336c-fx2 » Version: N/A
When used together with: Cisco » Nexus 9336c-fx2-e » Version: N/A
When used together with: Cisco » Nexus 9336pq Aci Spine » Version: N/A
When used together with: Cisco » Nexus 9348gc-fxp » Version: N/A
When used together with: Cisco » Nexus 93600cd-gx » Version: N/A
When used together with: Cisco » Nexus 9364c » Version: N/A
When used together with: Cisco » Nexus 9364c-gx » Version: N/A
When used together with: Cisco » Nexus 9372px » Version: N/A
When used together with: Cisco » Nexus 9372px-e » Version: N/A
When used together with: Cisco » Nexus 9372tx » Version: N/A
When used together with: Cisco » Nexus 9372tx-e » Version: N/A
When used together with: Cisco » Nexus 9396px » Version: N/A
When used together with: Cisco » Nexus 9396tx » Version: N/A
When used together with: Cisco » Nexus 9508 » Version: N/A
Cisco » Nx-os » Version: 9.3(6)
cpe:2.3:o:cisco:nx-os:9.3\(6\):*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Nexus 3000 » Version: N/A
When used together with: Cisco » Nexus 3100 » Version: N/A
When used together with: Cisco » Nexus 3100-z » Version: N/A
When used together with: Cisco » Nexus 3100v » Version: N/A
When used together with: Cisco » Nexus 3200 » Version: N/A
When used together with: Cisco » Nexus 3400 » Version: N/A
When used together with: Cisco » Nexus 3500 » Version: N/A
When used together with: Cisco » Nexus 3600 » Version: N/A
When used together with: Cisco » Nexus 9000v » Version: N/A
When used together with: Cisco » Nexus 92160yc-x » Version: N/A
When used together with: Cisco » Nexus 92300yc » Version: N/A
When used together with: Cisco » Nexus 92304qc » Version: N/A
When used together with: Cisco » Nexus 92348gc-x » Version: N/A
When used together with: Cisco » Nexus 9236c » Version: N/A
When used together with: Cisco » Nexus 9272q » Version: N/A
When used together with: Cisco » Nexus 93108tc-ex » Version: N/A
When used together with: Cisco » Nexus 93108tc-ex-24 » Version: N/A
When used together with: Cisco » Nexus 93108tc-fx » Version: N/A
When used together with: Cisco » Nexus 93108tc-fx-24 » Version: N/A
When used together with: Cisco » Nexus 93120tx » Version: N/A
When used together with: Cisco » Nexus 93128tx » Version: N/A
When used together with: Cisco » Nexus 9316d-gx » Version: N/A
When used together with: Cisco » Nexus 93180lc-ex » Version: N/A
When used together with: Cisco » Nexus 93180yc-ex » Version: N/A
When used together with: Cisco » Nexus 93180yc-ex-24 » Version: N/A
When used together with: Cisco » Nexus 93180yc-fx » Version: N/A
When used together with: Cisco » Nexus 93180yc-fx-24 » Version: N/A
When used together with: Cisco » Nexus 93180yc-fx3 » Version: N/A
When used together with: Cisco » Nexus 93180yc-fx3s » Version: N/A
When used together with: Cisco » Nexus 93216tc-fx2 » Version: N/A
When used together with: Cisco » Nexus 93240yc-fx2 » Version: N/A
When used together with: Cisco » Nexus 9332c » Version: N/A
When used together with: Cisco » Nexus 9332pq » Version: N/A
When used together with: Cisco » Nexus 93360yc-fx2 » Version: N/A
When used together with: Cisco » Nexus 9336c-fx2 » Version: N/A
When used together with: Cisco » Nexus 9336c-fx2-e » Version: N/A
When used together with: Cisco » Nexus 9336pq Aci Spine » Version: N/A
When used together with: Cisco » Nexus 9348gc-fxp » Version: N/A
When used together with: Cisco » Nexus 93600cd-gx » Version: N/A
When used together with: Cisco » Nexus 9364c » Version: N/A
When used together with: Cisco » Nexus 9364c-gx » Version: N/A
When used together with: Cisco » Nexus 9372px » Version: N/A
When used together with: Cisco » Nexus 9372px-e » Version: N/A
When used together with: Cisco » Nexus 9372tx » Version: N/A
When used together with: Cisco » Nexus 9372tx-e » Version: N/A
When used together with: Cisco » Nexus 9396px » Version: N/A
When used together with: Cisco » Nexus 9396tx » Version: N/A
When used together with: Cisco » Nexus 9508 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2021-1361

EPSS FAQ

0.29%

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

~ 50 %

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

CVSS scores for CVE-2021-1361

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
9.4	HIGH	AV:N/AC:L/Au:N/C:N/I:C/A:C	10.0	9.2	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Complete Availability Impact: Complete
9.8	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
9.1	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H	3.9	5.2	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: High Availability: High

CWE ids for CVE-2021-1361

CWE-552 Files or Directories Accessible to External Parties

The product makes files or directories accessible to unauthorized actors, even though they should not be.

Assigned by: ykramarz@cisco.com (Primary)

References for CVE-2021-1361

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-3000-9000-fileaction-QtLzDRy2

Cisco NX-OS Software Unauthenticated Arbitrary File Actions Vulnerability
Vendor Advisory

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Vulnerability Details : CVE-2021-1361

Products affected by CVE-2021-1361

Exploit prediction scoring system (EPSS) score for CVE-2021-1361

CVSS scores for CVE-2021-1361

CWE ids for CVE-2021-1361

References for CVE-2021-1361