Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | < 17.3.7 |
| Cisco | Catalyst 9300 | - |
| Cisco | Catalyst 9300-24P-A | - |
| Cisco | Catalyst 9300-24P-E | - |
| Cisco | Catalyst 9300-24S-A | - |
| Cisco | Catalyst 9300-24S-E | - |
| Cisco | Catalyst 9300-24T-A | - |
| Cisco | Catalyst 9300-24T-E | - |
| Cisco | Catalyst 9300-24U-A | - |
| Cisco | Catalyst 9300-24U-E | - |
| Cisco | Catalyst 9300-24Ux-A | - |
| Cisco | Catalyst 9300-24Ux-E | - |
| Cisco | Catalyst 9300-48P-A | - |
| Cisco | Catalyst 9300-48P-E | - |
| Cisco | Catalyst 9300-48S-A | - |
| Cisco | Catalyst 9300-48S-E | - |
| Cisco | Catalyst 9300-48T-A | - |
| Cisco | Catalyst 9300-48T-E | - |
| Cisco | Catalyst 9300-48U-A | - |
| Cisco | Catalyst 9300-48U-E | - |
Related Weaknesses (CWE)
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ciVendor Advisory
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ciVendor Advisory
FAQ
What is CVE-2023-20082?
CVE-2023-20082 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 acce...
How severe is CVE-2023-20082?
CVE-2023-20082 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-20082?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco Catalyst 9300, Cisco Catalyst 9300-24P-A, Cisco Catalyst 9300-24P-E, Cisco Catalyst 9300-24S-A.