SB2021070818 - Denial of service in SonicWall Switch
Published: July 8, 2021
Security Bulletin ID
SB2021070818
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2021-20024)
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 update from vendor's website.