CVE-2021-20041
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
An unauthenticated and remote adversary can consume all of the device's CPU due to crafted HTTP requests sent to SMA100 /fileshare/sonicfiles/sonicfiles resulting in a loop with unreachable exit condition. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
Un adversario no autenticado y remoto puede consumir toda la CPU del dispositivo debido a peticiones HTTP diseñadas enviadas a SMA100 /fileshare/sonicfiles/sonicfiles, lo que provoca un bucle con condición de salida inalcanzable. Esta vulnerabilidad afecta a los dispositivos SMA 200, 210, 400, 410 y 500v
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-12-17 CVE Reserved
- 2021-12-08 CVE Published
- 2024-08-03 CVE Updated
- 2024-08-23 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026 | 2021-12-10 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Sonicwall Search vendor "Sonicwall" | Sma 200 Firmware Search vendor "Sonicwall" for product "Sma 200 Firmware" | 9.0.0.11-31sv Search vendor "Sonicwall" for product "Sma 200 Firmware" and version "9.0.0.11-31sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 200 Search vendor "Sonicwall" for product "Sma 200" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 200 Firmware Search vendor "Sonicwall" for product "Sma 200 Firmware" | 10.2.0.8-37sv Search vendor "Sonicwall" for product "Sma 200 Firmware" and version "10.2.0.8-37sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 200 Search vendor "Sonicwall" for product "Sma 200" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 200 Firmware Search vendor "Sonicwall" for product "Sma 200 Firmware" | 10.2.1.1-19sv Search vendor "Sonicwall" for product "Sma 200 Firmware" and version "10.2.1.1-19sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 200 Search vendor "Sonicwall" for product "Sma 200" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 210 Firmware Search vendor "Sonicwall" for product "Sma 210 Firmware" | 9.0.0.11-31sv Search vendor "Sonicwall" for product "Sma 210 Firmware" and version "9.0.0.11-31sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 210 Search vendor "Sonicwall" for product "Sma 210" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 210 Firmware Search vendor "Sonicwall" for product "Sma 210 Firmware" | 10.2.0.8-37sv Search vendor "Sonicwall" for product "Sma 210 Firmware" and version "10.2.0.8-37sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 210 Search vendor "Sonicwall" for product "Sma 210" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 210 Firmware Search vendor "Sonicwall" for product "Sma 210 Firmware" | 10.2.1.1-19sv Search vendor "Sonicwall" for product "Sma 210 Firmware" and version "10.2.1.1-19sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 210 Search vendor "Sonicwall" for product "Sma 210" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 410 Firmware Search vendor "Sonicwall" for product "Sma 410 Firmware" | 9.0.0.11-31sv Search vendor "Sonicwall" for product "Sma 410 Firmware" and version "9.0.0.11-31sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 410 Search vendor "Sonicwall" for product "Sma 410" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 410 Firmware Search vendor "Sonicwall" for product "Sma 410 Firmware" | 10.2.0.8-37sv Search vendor "Sonicwall" for product "Sma 410 Firmware" and version "10.2.0.8-37sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 410 Search vendor "Sonicwall" for product "Sma 410" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 410 Firmware Search vendor "Sonicwall" for product "Sma 410 Firmware" | 10.2.1.1-19sv Search vendor "Sonicwall" for product "Sma 410 Firmware" and version "10.2.1.1-19sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 410 Search vendor "Sonicwall" for product "Sma 410" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 400 Firmware Search vendor "Sonicwall" for product "Sma 400 Firmware" | 9.0.0.11-31sv Search vendor "Sonicwall" for product "Sma 400 Firmware" and version "9.0.0.11-31sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 400 Search vendor "Sonicwall" for product "Sma 400" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 400 Firmware Search vendor "Sonicwall" for product "Sma 400 Firmware" | 10.2.0.8-37sv Search vendor "Sonicwall" for product "Sma 400 Firmware" and version "10.2.0.8-37sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 400 Search vendor "Sonicwall" for product "Sma 400" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 400 Firmware Search vendor "Sonicwall" for product "Sma 400 Firmware" | 10.2.1.1-19sv Search vendor "Sonicwall" for product "Sma 400 Firmware" and version "10.2.1.1-19sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 400 Search vendor "Sonicwall" for product "Sma 400" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 500v Firmware Search vendor "Sonicwall" for product "Sma 500v Firmware" | 9.0.0.11-31sv Search vendor "Sonicwall" for product "Sma 500v Firmware" and version "9.0.0.11-31sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 500v Search vendor "Sonicwall" for product "Sma 500v" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 500v Firmware Search vendor "Sonicwall" for product "Sma 500v Firmware" | 10.2.0.8-37sv Search vendor "Sonicwall" for product "Sma 500v Firmware" and version "10.2.0.8-37sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 500v Search vendor "Sonicwall" for product "Sma 500v" | - | - |
Safe
|
| Sonicwall Search vendor "Sonicwall" | Sma 500v Firmware Search vendor "Sonicwall" for product "Sma 500v Firmware" | 10.2.1.1-19sv Search vendor "Sonicwall" for product "Sma 500v Firmware" and version "10.2.1.1-19sv" | - |
Affected
| in | Sonicwall Search vendor "Sonicwall" | Sma 500v Search vendor "Sonicwall" for product "Sma 500v" | - | - |
Safe
|