CVE-2023-20082
Cisco Catalyst 9300 Series Switches Public Key Verification Chain Trust Break Boot Time Execution
Description
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.
INFO
Published Date :
March 23, 2023, 5:15 p.m.
Last Modified :
Nov. 7, 2023, 4:05 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-20082.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c9300-spi-ace-yejYgnNQ | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-20082 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-20082 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Removed CVSS V3 Cisco Systems, Inc. AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Added CVSS V3.1 Cisco Systems, Inc. AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N -
Initial Analysis by [email protected]
Mar. 30, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c9300-spi-ace-yejYgnNQ No Types Assigned https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c9300-spi-ace-yejYgnNQ Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* versions up to (excluding) 17.3.7 *cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* versions from (including) 17.4 up to (excluding) 17.6.5 *cpe:2.3:o:cisco:ios_xe:17.7:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:catalyst_9300:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24p-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24p-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24s-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24s-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24t-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24t-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24u-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24u-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24ux-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-24ux-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48p-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48p-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48s-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48s-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48t-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48t-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48u-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48u-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48un-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48un-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48uxm-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300-48uxm-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24p-4g-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24p-4g-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24p-4x-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24p-4x-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24t-4g-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24t-4g-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24t-4x-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-24t-4x-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48p-4g-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48p-4g-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48p-4x-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48p-4x-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48t-4g-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48t-4g-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48t-4x-a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l-48t-4x-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300l_stack:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300lm:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:catalyst_9300x:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-20082 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-20082
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.24798
percentile