Remote denial of service in SonicWall SMA 100 Series
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-20034 |
| CWE-ID | CWE-284 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
SMA 100 Hardware solutions / Security hardware applicances |
| Vendor | SonicWall |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Improper access control
EUVDB-ID: #VU56853
Risk: High
CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-20034
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to delete arbitrary files on the system.
The vulnerability exists due to improper access restrictions in SMA 100 management interface. A remote non-authenticated attacker can bypass implemented path traversal checks and delete an arbitrary file on the system, potentially resulting in a reboot to factory default settings.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSMA 100: 9.0.0.10-28sv - 10.2.1.0-17sv
External linkshttp://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
