NVD

CVE-2021-1390 Detail

Modified

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

A vulnerability in one of the diagnostic test CLI commands of Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker would need to have valid user credentials at privilege level 15. This vulnerability exists because the affected software permits modification of the run-time memory of an affected device under specific circumstances. An attacker could exploit this vulnerability by authenticating to the affected device and issuing a specific diagnostic test command at the CLI. A successful exploit could trigger a logic error in the code that was designed to restrict run-time memory modifications. The attacker could take advantage of this logic error to overwrite system memory locations and execute arbitrary code on the underlying Linux operating system (OS) of the affected device.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 6.7 MEDIUM

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 5.1 MEDIUM

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 7.2 HIGH

Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C)

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-XE-OFP-6Nezgn7b	CVE, Cisco Systems, Inc.	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-123	Write-what-where Condition	Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Initial Analysis by NIST 3/30/2021 9:13:48 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Added	CVSS V2		NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Added	CPE Configuration		Record truncated, showing 2048 of 3790 characters. View Entire Change Record OR cpe:2.3:o:cisco:ios_xe:16.8.1::::::: cpe:2.3:o:cisco:ios_xe:16.8.1a::::::: cpe:2.3:o:cisco:ios_xe:16.8.1b::::::: cpe:2.3:o:cisco:ios_xe:16.8.1c::::::: cpe:2.3:o:cisco:ios_xe:16.8.1d::::::: cpe:2.3:o:cisco:ios_xe:16.8.1e::::::: cpe:2.3:o:cisco:ios_xe:16.8.1s::::::: cpe:2.3:o:cisco:ios_xe:16.8.2::::::: cpe:2.3:o:cisco:ios_xe:16.8.3::::::: cpe:2.3:o:cisco:ios_xe:16.9.1::::::: cpe:2.3:o:cisco:ios_xe:16.9.1a::::::: cpe:2.3:o:cisco:ios_xe:16.9.1b::::::: cpe:2.3:o:cisco:ios_xe:16.9.1c::::::: cpe:2.3:o:cisco:ios_xe:16.9.1d::::::: cpe:2.3:o:cisco:ios_xe:16.9.1s::::::: cpe:2.3:o:cisco:ios_xe:16.9.2::::::: cpe:2.3:o:cisco:ios_xe:16.9.2a::::::: cpe:2.3:o:cisco:ios_xe:16.9.2s::::::: cpe:2.3:o:cisco:ios_xe:16.9.3::::::: cpe:2.3:o:cisco:ios_xe:16.9.3a::::::: cpe:2.3:o:cisco:ios_xe:16.9.3h::::::: cpe:2.3:o:cisco:ios_xe:16.9.3s::::::: cpe:2.3:o:cisco:ios_xe:16.9.4::::::: cpe:2.3:o:cisco:ios_xe:16.9.4c::::::: cpe:2.3:o:cisco:ios_xe:16.9.5::::::: cpe:2.3:o:cisco:ios_xe:16.9.5f::::::: cpe:2.3:o:cisco:ios_xe:16.9.6::::::: cpe:2.3:o:cisco:ios_xe:16.10.1::::::: cpe:2.3:o:cisco:ios_xe:16.10.1a::::::: cpe:2.3:o:cisco:ios_xe:16.10.1b::::::: cpe:2.3:o:cisco:ios_xe:16.10.1c::::::: cpe:2.3:o:cisco:ios_xe:16.10.1d::::::: cpe:2.3:o:cisco:ios_xe:16.10.1e::::::: cpe:2.3:o:cisco:ios_xe:16.10.1f::::::: cpe:2.3:o:cisco:ios_xe:16.10.1g::::::: cpe:2.3:o:cisco:ios_xe:16.10.1s::::::: cpe:2.3:o:cisco:ios_xe:16.10.2::::::: cpe:2.3:o:cisco:ios_xe:16.10.3::::::: cpe:2.3:o:cisco:ios_xe:16.11.1::::::: cpe:2.3:o:cisco:ios_xe:16.11.1a:::::::
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-XE-OFP-6Nezgn7b No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-XE-OFP-6Nezgn7b Vendor Advisory

CVE Modified by Cisco Systems, Inc. 3/24/2021 5:15:12 PM

Action

Type

Old Value

New Value

Changed

Description

 A vulnerability in one of the diagnostic test CLI commands of Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker would need to have valid user credentials at privilege level 15.
 This vulnerability exists because the affected software permits modification of the run-time memory of an affected device under specific circumstances. An attacker could exploit this vulnerability by authenticating to the affected device and issuing a specific diagnostic test command at the CLI. A successful exploit could trigger a logic error in the code that was designed to restrict run-time memory modifications. The attacker could take advantage of this logic error to overwrite system memory locations and execute arbitrary code on the underlying Linux operating system (OS) of the affected device.

A vulnerability in one of the diagnostic test CLI commands of Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker would need to have valid user credentials at privilege level 15. This vulnerability exists because the affected software permits modification of the run-time memory of an affected device under specific circumstances. An attacker could exploit this vulnerability by authenticating to the affected device and issuing a specific diagnostic test command at the CLI. A successful exploit could trigger a logic error in the code that was designed to restrict run-time memory modifications. The attacker could take advantage of this logic error to overwrite system memory locations and execute arbitrary code on the underlying Linux operating system (OS) of the affected device.

Quick Info

CVE Dictionary Entry:
CVE-2021-1390
NVD Published Date:
03/24/2021
NVD Last Modified:
11/21/2024
Source:
Cisco Systems, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2021-1390 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

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Change History

CVE Modified by CVE 11/21/2024 12:44:14 AM

CVE Modified by Cisco Systems, Inc. 5/14/2024 3:58:47 AM

CVE Modified by Cisco Systems, Inc. 11/06/2023 10:28:10 PM

Initial Analysis by NIST 3/30/2021 9:13:48 AM

CVE Modified by Cisco Systems, Inc. 3/24/2021 5:15:12 PM

Quick Info