#VU54623 Out-of-bounds read in SonicWall Switch - CVE-2021-20024
Published: July 8, 2021
Vulnerability identifier: #VU54623
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-20024
CWE-ID: CWE-125
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
SonicWall Switch
SonicWall Switch
Software vendor:
SonicWall
SonicWall
Description
The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when handling LLDP Protocol. A remote attacker on the local network can send specially crafted traffic to the device, trigger an out-of-bounds read error and read contents of memory on the system.
Remediation
Install updates from vendor's website.
The following models are affected:
SWS14-48FPOE, SWS14-48, SWS14-24FPOE, SWS14-24, SWS12-10FPOE, SWS12-8POE, SWS12-8