Buffer overflow in Cisco Small Business 220 Series Smart Switches - CVE-2021-34779
Published: October 7, 2021
Vulnerability identifier: #VU57116
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-34779
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing LLDP messages in the Link Layer Discovery Protocol. A remote attacker on the local network can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Cisco Small Business 220 Series Smart Switches
How to mitigate CVE-2021-34779
Install updates from vendor's website.
Cisco Small Business 220 Series Smart Switches - update to 1.2.1.2