Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-1451

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.

Published

2021-03-24T20:15:15.477

Last Modified

2024-11-21T05:44:23.623

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.1 (HIGH)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

8.6

Impact Score

10.0

Weaknesses
  • Type: Primary
    CWE-119
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios_xe 3.6.0be Yes
Operating System cisco ios_xe 3.6.0e Yes
Operating System cisco ios_xe 3.6.1e Yes
Operating System cisco ios_xe 3.6.2e Yes
Operating System cisco ios_xe 3.6.3e Yes
Operating System cisco ios_xe 3.6.4e Yes
Operating System cisco ios_xe 3.6.5ae Yes
Operating System cisco ios_xe 3.6.5be Yes
Operating System cisco ios_xe 3.6.5e Yes
Operating System cisco ios_xe 3.6.6e Yes
Operating System cisco ios_xe 3.6.7e Yes
Operating System cisco ios_xe 3.6.8e Yes
Operating System cisco ios_xe 3.6.9e Yes
Operating System cisco ios_xe 3.6.10e Yes
Operating System cisco ios_xe 3.7.0e Yes
Operating System cisco ios_xe 3.7.1e Yes
Operating System cisco ios_xe 3.7.2e Yes
Operating System cisco ios_xe 3.7.3e Yes
Operating System cisco ios_xe 3.7.4e Yes
Operating System cisco ios_xe 3.7.5e Yes
Operating System cisco ios_xe 3.8.0e Yes
Operating System cisco ios_xe 3.8.1e Yes
Operating System cisco ios_xe 3.8.2e Yes
Operating System cisco ios_xe 3.8.3e Yes
Operating System cisco ios_xe 3.8.4e Yes
Operating System cisco ios_xe 3.8.5ae Yes
Operating System cisco ios_xe 3.8.5e Yes
Operating System cisco ios_xe 3.8.6e Yes
Operating System cisco ios_xe 3.8.7e Yes
Operating System cisco ios_xe 3.8.8e Yes
Operating System cisco ios_xe 3.8.9e Yes
Operating System cisco ios_xe 3.8.10e Yes
Operating System cisco ios_xe 3.9.0e Yes
Operating System cisco ios_xe 3.9.1e Yes
Operating System cisco ios_xe 3.9.2be Yes
Operating System cisco ios_xe 3.9.2e Yes
Operating System cisco ios_xe 3.10.0ce Yes
Operating System cisco ios_xe 3.10.0e Yes
Operating System cisco ios_xe 3.10.1ae Yes
Operating System cisco ios_xe 3.10.1e Yes
Operating System cisco ios_xe 3.10.1se Yes
Operating System cisco ios_xe 3.10.2e Yes
Operating System cisco ios_xe 3.10.3e Yes
Operating System cisco ios_xe 3.11.0e Yes
Operating System cisco ios_xe 3.11.1ae Yes
Operating System cisco ios_xe 3.11.1e Yes
Operating System cisco ios_xe 3.11.2ae Yes
Operating System cisco ios_xe 3.11.2e Yes
Operating System cisco ios_xe 3.11.3ae Yes
Operating System cisco ios_xe 3.11.3e Yes
Operating System cisco ios_xe 15.2\(7\)e Yes
Operating System cisco ios_xe 16.11.2 Yes
Operating System cisco ios_xe 16.12.5a Yes
Operating System cisco ios_xe 17.3.1 Yes
Operating System linux linux_kernel - No
References