CVE-2023-20082

published 2023-03-23

CVE-2023-20082: A vulnerability in Cisco IOS XE Software for Cisco Catalyst 9300 Series Switches could allow an authenticated, local attacker with level-15 privileges or an…

Priority P4 30 medium 6.8 CVSS 3.1

AV P AC L PR N UI N S U C H I H A H

A vulnerability in Cisco IOS XE Software for Cisco Catalyst 9300 Series Switches could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to the device to execute persistent code at boot time and break the chain of trust. This vulnerability is due to errors that occur when retrieving the public release key that is used for image signature verification. An attacker could exploit this vulnerability by modifying specific variables in the Serial Peripheral Interface (SPI) flash memory of an affected device. A successful exploit could allow the attacker to execute persistent code on the underlying operating system. Note: In Cisco IOS XE Software releases 16.11.1 and later, the complexity of an attack using this vulnerability is high. However, an attacker with level-15 privileges could easily downgrade the Cisco IOS XE Software on a device to a release that would lower the attack complexity.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_ios_xe_rommon_software	—	—
cisco	ios_xe	< 17.3.7	17.3.7
cisco	ios_xe	—	—
cisco	ios_xe	—	—
cisco	ios_xe	>= 17.4 < 17.6.5	17.6.5

CVSS provenance

nvd v3.1 6.8 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

vendor_cisco 6.1 MEDIUM

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CWE-78