A vulnerability in Cisco IOS XE Software could allow an authenticated, local attacker to execute persistent code at boot time and break the chain of trust. This vulnerability is due to incorrect validations by boot scripts when specific ROM monitor (ROMMON) variables are set. An attacker could exploit this vulnerability by installing code to a specific directory in the underlying operating system (OS) and setting a specific ROMMON variable. A successful exploit could allow the attacker to execute persistent code on the underlying OS. To exploit this vulnerability, the attacker would need access to the root shell on the device or have physical access to the device.
Metrics
No CVSS v4.0
Attack Vector Adjacent Network
Attack Complexity Low
Privileges Required High
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
User Interaction None
No CVSS v3.0
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
Key SSVC decision points have not yet been added.
Affected Vendors & Products
Vendors | Products |
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Cisco |
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Configuration 1 [-]
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No data.
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2020-09-24T18:01:41.719290Z
Updated: 2024-09-17T00:06:50.166Z
Reserved: 2019-12-12T00:00:00
Link: CVE-2020-3417
Vulnrichment
No data.
NVD
Status : Modified
Published: 2020-09-24T18:15:18.730
Modified: 2023-11-07T03:22:41.223
Link: CVE-2020-3417
Redhat
No data.