Buffer overflow in Cisco Systems, Inc products - CVE-2021-1451

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Main Vulnerability Database Vulnerabilities #VU51779

Buffer overflow in Cisco Systems, Inc products - CVE-2021-1451

Published: March 30, 2021


Vulnerability identifier: #VU51779
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-1451
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco IOS XE
Cisco Catalyst 4500 Series
Cisco Catalyst 4500-X Series

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the Easy Virtual Switching System (VSS) feature. A remote attacker can send specially crafted Easy VSS protocol packets to UDP port 5500, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


How to mitigate CVE-2021-1451

Install updates from vendor's website.

Sources