CVE-2021-20038: SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability
Critical · CVSS 9.8 (CVSS 3.1)KEV known exploitedEPSS 99.9%, 100th percentilePublished Updated Assigner: sonicwall
In CISA’s Known Exploited Vulnerabilities catalog: SonicWall SMA 100 Appliances Stack-Based Buffer Overflow Vulnerability.
Added , federal remediation due . Known ransomware use: Known.
Required action: Apply updates per vendor instructions.
Description
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.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · CWE-121
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
SonicWall: SonicWall SMA100
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/jbaines-r7/badblood (opens in new tab)
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026 (opens in new tab)
- www.rapid7.com/blog/post/2022/01/11/cve-2021-20038-42-sonicwall-sma-100-multiple-vul… (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)