Cisco IOS XE bootp command injection

Summaryinfo

A vulnerability was found in Cisco IOS XE and classified as critical. Affected is an unknown function of the component bootp Handler. Executing a manipulation can lead to command injection. The identification of this vulnerability is CVE-2020-3207. The attack can only be executed locally. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Cisco IOS XE (Router Operating System) (the affected version is unknown). This vulnerability affects an unknown code of the component bootp Handler. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the processing of boot options of specific Cisco IOS XE Software switches could allow an authenticated, local attacker with root shell access to the underlying operating system (OS) to conduct a command injection attack during device boot. This vulnerability is due to insufficient input validation checks while processing boot options. An attacker could exploit this vulnerability by modifying device boot options to execute attacker-provided code. A successful exploit may allow an attacker to bypass the Secure Boot process and execute malicious code on an affected device with root-level privileges.

The weakness was shared 06/03/2020 as cisco-sa-ngwc-cmdinj-KEwWVWR as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability was named CVE-2020-3207 since 12/12/2019. Local access is required to approach this attack. A single authentication is needed for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

The entries VDB-156038, VDB-156036, VDB-156033 and VDB-156030 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

• 🔍

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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