CVE-2021-1451 Detail
Current Description
A vulnerability in the Easy Virtual Switching System (VSS) feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an affected device. The vulnerability is due to incorrect boundary checks of certain values in Easy VSS protocol packets that are destined for an affected device. An attacker could exploit this vulnerability by sending crafted Easy VSS protocol packets to UDP port 5500 while the affected device is in a specific state. When the crafted packet is processed, a buffer overflow condition may occur. A successful exploit could allow the attacker to trigger a denial of service (DoS) condition or execute arbitrary code with root privileges on the underlying Linux operating system of the affected device.
Analysis Description
A vulnerability in the Easy Virtual Switching System (VSS) feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an affected device. The vulnerability is due to incorrect boundary checks of certain values in Easy VSS protocol packets that are destined for an affected device. An attacker could exploit this vulnerability by sending crafted Easy VSS protocol packets to UDP port 5500 while the affected device is in a specific state. When the crafted packet is processed, a buffer overflow condition may occur. A successful exploit could allow the attacker to trigger a denial of service (DoS) condition or execute arbitrary code with root privileges on the underlying Linux operating system of the affected device.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | Cisco Systems, Inc. |
Change History
2 change records found show changes
Initial Analysis 3/29/2021 2:48:13 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration | Record truncated, showing 500 of 3019 characters. View Entire Change Record AND
OR
*cpe:2.3:o:cisco:ios_xe:3.6.0be:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.6.0e:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.6.1e:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.6.2e:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.6.3e:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.6.4e:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.6.5ae:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.6.5be:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:3.6.5e:*:*:
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| Added | CVSS V2 |
NIST (AV:N/AC:M/Au:N/C:C/I:C/A:C) |
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| Added | CVSS V3.1 |
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
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| Changed | Reference Type |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-evss-code-exe-8cw5VSvw No Types Assigned |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-evss-code-exe-8cw5VSvw Vendor Advisory |
CVE Modified by Cisco Systems, Inc. 3/24/2021 5:15:14 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Changed | Description | Record truncated, showing 500 of 898 characters. View Entire Change Record A vulnerability in the Easy Virtual Switching System (VSS) feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an affected device. The vulnerability is due to incorrect boundary checks of certain values in Easy VSS protocol packets that are destined for an affected device. An attacker could exploit this vulnerabili |
Record truncated, showing 500 of 893 characters. View Entire Change Record A vulnerability in the Easy Virtual Switching System (VSS) feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an affected device. The vulnerability is due to incorrect boundary checks of certain values in Easy VSS protocol packets that are destined for an affected device. An attacker could exploit this vulnerability |
Quick Info
CVE Dictionary Entry:
CVE-2021-1451
NVD Published Date:
03/24/2021
NVD Last Modified:
03/29/2021
Source:
Cisco Systems, Inc.