PT-2020-17247 · Cisco · Cisco Ios Xe

Victor Kamensky · Published 2020-09-24 · Updated 2023-05-23 · CVE-2020-3396

Positive Technologies (AI Summary)

CVSS v3.1

7.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software (affected versions not specified)

Description A vulnerability in the file system on the pluggable USB 3.0 Solid State Drive (SSD) for Cisco IOS XE Software could allow an authenticated, physical attacker to remove the USB 3.0 SSD and modify sensitive areas of the file system, including the namespace container protections. The vulnerability occurs because the USB 3.0 SSD control data is not stored on the internal boot flash. An attacker could exploit this vulnerability by removing the USB 3.0 SSD, modifying or deleting files on the USB 3.0 SSD by using another device, and then reinserting the USB 3.0 SSD on the original device. A successful exploit could allow the attacker to remove container protections and perform file actions outside the namespace of the container with root privileges.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

Improper Privilege Management

Weakness Enumeration

CWE-284

CWE-269

Related Identifiers

CVE-2020-3396

Affected Products

Cisco Ios Xe

References · 4

• https://osv.dev/vulnerability/CVE-2020-3396 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3396 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-usb-guestshell-WmevScDj · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-usb-guestshell-WmevScDj · Vendor Advisory