CVE-2020-3403

A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker to inject a command to the underlying operating system that will execute with root privileges upon the next reboot of the device. The authenticated user must have privileged EXEC permissions on the device. The vulnerability is due to insufficient protection of values passed to a script that executes during device startup. An attacker could exploit this vulnerability by writing values to a specific file. A successful exploit could allow the attacker to execute commands with root privileges each time the affected device is restarted.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-cmdinj-2MzhjM6K	Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:cisco:ios_xe:17.2.1:*:*:*:*:*:*:*

OR	cpe:2.3:h:cisco:catalyst_9800-l:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-l-c:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-l-f:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-40:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-80:-:::::::*
	cpe:2.3:h:cisco:catalyst_9800-cl:-:::::::*

Information

Published : 2020-09-24 11:15

Updated : 2022-10-27 08:47

NVD link : CVE-2020-3403

Mitre link : CVE-2020-3403

JSON object : View

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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Products Affected

cisco

catalyst_9800-l-f
catalyst_9800-80
catalyst_9800-cl
ios_xe
catalyst_9800-l
catalyst_9800-l-c
catalyst_9800-40

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