CVE-2021-1398 Detail
Current Description
A vulnerability in the boot logic of Cisco IOS XE Software could allow an authenticated, local attacker with level 15 privileges or an unauthenticated attacker with physical access to execute arbitrary code on the underlying Linux operating system of an affected device. This vulnerability is due to incorrect validations of specific function arguments that are passed to the boot script. An attacker could exploit this vulnerability by tampering with a specific file, which an affected device would process during the initial boot process. On systems that are protected by the Unified Extensible Firmware Interface (UEFI) secure boot feature, a successful exploit could allow the attacker to execute unsigned code at boot time and bypass the image verification check in the secure boot process of the affected device.
Analysis Description
A vulnerability in the boot logic of Cisco IOS XE Software could allow an authenticated, local attacker with level 15 privileges or an unauthenticated attacker with physical access to execute arbitrary code on the underlying Linux operating system of an affected device. This vulnerability is due to incorrect validations of specific function arguments that are passed to the boot script. An attacker could exploit this vulnerability by tampering with a specific file, which an affected device would process during the initial boot process. On systems that are protected by the Unified Extensible Firmware Interface (UEFI) secure boot feature, a successful exploit could allow the attacker to execute unsigned code at boot time and bypass the image verification check in the secure boot process of the affected device.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-489 | Active Debug Code | Cisco Systems, Inc. |
Change History
2 change records found show changes
Initial Analysis 3/29/2021 5:45:18 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration | Record truncated, showing 500 of 13155 characters. View Entire Change Record OR
*cpe:2.3:o:cisco:ios_xe:3.7.0bs:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.0s:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.0xas:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.0xbs:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.1as:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.1s:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.2s:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.2ts:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.3s:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.7.4as:*:*
|
|
| Added | CVSS V2 |
NIST (AV:L/AC:M/Au:N/C:C/I:C/A:C) |
|
| Added | CVSS V3.1 |
NIST AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
|
| Changed | Reference Type |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-XE-ACE-75K3bRWe No Types Assigned |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-XE-ACE-75K3bRWe Vendor Advisory |
CVE Modified by Cisco Systems, Inc. 3/24/2021 5:15:13 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Changed | Description | Record truncated, showing 500 of 823 characters. View Entire Change Record A vulnerability in the boot logic of Cisco IOS XE Software could allow an authenticated, local attacker with level 15 privileges or an unauthenticated attacker with physical access to execute arbitrary code on the underlying Linux operating system of an affected device. This vulnerability is due to incorrect validations of specific function arguments that are passed to the boot script. An attacker could exploit this vulnerability by tampering with a specific file, which an affected device wou |
Record truncated, showing 500 of 818 characters. View Entire Change Record A vulnerability in the boot logic of Cisco IOS XE Software could allow an authenticated, local attacker with level 15 privileges or an unauthenticated attacker with physical access to execute arbitrary code on the underlying Linux operating system of an affected device. This vulnerability is due to incorrect validations of specific function arguments that are passed to the boot script. An attacker could exploit this vulnerability by tampering with a specific file, which an affected device would |
Quick Info
CVE Dictionary Entry:
CVE-2021-1398
NVD Published Date:
03/24/2021
NVD Last Modified:
03/29/2021
Source:
Cisco Systems, Inc.