According to its self-reported version, the remote SonicWall Secure Mobile Access is affected by multiple vulnerabilities, including:

  - An unauthenticated stack-based buffer overflow due to the SonicWall SMA SSLVPN Apache httpd server GET method of     mod_cgi module environment variables use a single stack-based buffer using `strcat`. This can allow a remote,     unauthenticated attacker to execute arbitrary code. (CVE-2021-20038)

  - Multiple unauthenticated file explorer heap-based and stack-based buffer overflows due the sonicfiles RAC_COPY_TO     (RacNumber 36) method which allows users to upload files to an SMB share and can be called without any     authentication. This can allow a remote, unauthenticated attacker to execute arbitrary code as the nobody user.
    (CVE-2021-20045)

  - A heap-based buffer overflow due to the RAC_GET_BOOKMARKS_HTML5 (RacNumber 35) method that allows users to list     their bookmarks. This method is vulnerable to heap-based buffer-overflow, due to unchecked use of strcat. This can     allow a remote, authenticated attacker to execute arbitrary code as the nobody user. (CVE-2021-20043)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

SonicWall Secure Mobile Access Multiple Vulnerabilities (SNWLID-2021-0026)

critical Nessus Plugin ID 155961

Version 1.12

Version 1.11

Version 1.10

Version 1.9

Version 1.12 May 8, 2025, 3:37 PM IAVM reference Plugin Feed: 202505081537
Version 1.11 Apr 25, 2023, 11:11 PM CVSS temporal metrics (Adjust exploitability metrics for CISA KEV vulnerabilities) Plugin Feed: 202304252311
Version 1.10 Feb 17, 2023, 11:41 PM CEA reference Plugin Feed: 202302172341
Version 1.9 Dec 6, 2022, 2:54 AM Reference Plugin Feed: 202212060254