CVE-2021-20045: sonicwall sma_200_firmware Classic Buffer Overflow

Vulnerability summary

CVE-2021-20045 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in sonicwall sma_200_firmware. EPSS estimates a 25.21% chance of exploitation in the next 30 days, higher than 97.9% of scored vulnerabilities.

Timeline

1. 08-12-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

A buffer overflow vulnerability in SMA100 sonicfiles RAC_COPY_TO (RacNumber 36) method allows a remote unauthenticated attacker to potentially execute code as the 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.