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[email protected]CVE-2020-3396

HistorySep 24, 2020 - 6:15 p.m.

CVE-2020-3396

2020-09-2418:15:17

CWE-284

CWE-269

[email protected]

web.nvd.nist.gov

cve-2020-3396

vulnerability

file system

usb 3.0

ssd

cisco ios xe software

authenticated attacker

physical attacker

namespace container protections

exploit

6.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

7.2 High

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

6.8 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.7%

JSON

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.

Affected configurations

NVD

Node

ciscoios_xeMatch16.12.1

AND

cisco1100-4g_integrated_services_routerMatch-

cisco1100-4gltegb_integrated_services_routerMatch-

cisco1100-4gltena_integrated_services_routerMatch-

cisco1100-6g_integrated_services_routerMatch-

cisco1100-lte_integrated_services_routerMatch-

cisco1100_integrated_services_routerMatch-

cisco4321\/k9-rf_integrated_services_routerMatch-

cisco4321\/k9-ws_integrated_services_routerMatch-

cisco4321\/k9_integrated_services_routerMatch-

cisco4331\/k9-rf_integrated_services_routerMatch-

cisco4331\/k9-ws_integrated_services_routerMatch-

cisco4331\/k9_integrated_services_routerMatch-

cisco4351\/k9-rf_integrated_services_routerMatch-

cisco4351\/k9-ws_integrated_services_routerMatch-

cisco4351\/k9_integrated_services_routerMatch-

ciscoasr_1000-xMatch-

ciscoasr_1001Match-

ciscoasr_1001-xMatch-

ciscoasr_1002Match-

ciscoasr_1002-xMatch-

ciscoasr_1004Match-

ciscoasr_1006Match-

ciscoasr_1013Match-

ciscoasr_1023Match-

ciscocatalyst_c9300-24pMatch-

ciscocatalyst_c9300-24sMatch-

ciscocatalyst_c9300-24tMatch-

ciscocatalyst_c9300-24uMatch-

ciscocatalyst_c9300-24uxMatch-

ciscocatalyst_c9300-48pMatch-

ciscocatalyst_c9300-48sMatch-

ciscocatalyst_c9300-48tMatch-

ciscocatalyst_c9300-48uMatch-

ciscocatalyst_c9300-48unMatch-

ciscocatalyst_c9300-48uxmMatch-

ciscocatalyst_c9300l-24p-4gMatch-

ciscocatalyst_c9300l-24p-4xMatch-

ciscocatalyst_c9300l-24t-4gMatch-

ciscocatalyst_c9300l-24t-4xMatch-

ciscocatalyst_c9300l-48p-4gMatch-

ciscocatalyst_c9300l-48p-4xMatch-

ciscocatalyst_c9300l-48t-4gMatch-

ciscocatalyst_c9300l-48t-4xMatch-

ciscocatalyst_c9404rMatch-

ciscocatalyst_c9407rMatch-

ciscocatalyst_c9410rMatch-

ciscocatalyst_c9500-12qMatch-

ciscocatalyst_c9500-16xMatch-

ciscocatalyst_c9500-24qMatch-

ciscocatalyst_c9500-24y4cMatch-

ciscocatalyst_c9500-32cMatch-

ciscocatalyst_c9500-32qcMatch-

ciscocatalyst_c9500-40xMatch-

ciscocatalyst_c9500-48y4cMatch-

ciscocsr1000vMatch-

CPENameOperatorVersion
cisco:ios_xecisco ios xeeq16.12.1

CPE	Name	Operator	Version
cisco:ios_xe	cisco ios xe	eq	16.12.1

CNA Affected

[
  {
    "product": "Cisco IOS XE Software ",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-usb-guestshell-WmevScDj

6.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

7.2 High

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

6.8 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.7%

JSON

Related for CVE-2020-3396

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