critical9.8Known exploited
CVE-2021-20038
SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability
Exploited in the wild
This vulnerability is on a Known Exploited Vulnerabilities catalogue, added 2022-01-28. Federal due date: 2022-02-11.
Apply updates per vendor instructions.
Impact
A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Sonicwall | Sma 200 Firmware | Versions 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv |
| Sonicwall | Sma 210 Firmware | Versions 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv |
| Sonicwall | Sma 410 Firmware | Versions 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv |
| Sonicwall | Sma 400 Firmware | Versions 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv |
| Sonicwall | Sma 500v Firmware | Versions 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://github.com/jbaines-r7/badblood
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026
- https://www.rapid7.com/blog/post/2022/01/11/cve-2021-20038-42-sonicwall-sma-100-multiple-vulnerabilities-fixed-2/
- https://github.com/jbaines-r7/badblood
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026
- https://www.rapid7.com/blog/post/2022/01/11/cve-2021-20038-42-sonicwall-sma-100-multiple-vulnerabilities-fixed-2/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20038