Vulnerability Details : CVE-2021-20034
Potential exploit
An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.
Vulnerability category: Directory traversalBypassGain privilege
Products affected by CVE-2021-20034
- cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*
- Sonicwall » Sma 200 FirmwareVersions from including (>=) 10.2.1.0 and up to, including, (<=) 10.2.1.0-17svcpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*
- Sonicwall » Sma 200 FirmwareVersions from including (>=) 10.2.0.0 and up to, including, (<=) 10.2.0.7-34svcpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*
- Sonicwall » Sma 210 FirmwareVersions from including (>=) 10.2.0.0 and up to, including, (<=) 10.2.0.7-34svcpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*
- Sonicwall » Sma 210 FirmwareVersions from including (>=) 10.2.1.0 and up to, including, (<=) 10.2.1.0-17svcpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*
- Sonicwall » Sma 400 FirmwareVersions from including (>=) 10.2.0.0 and up to, including, (<=) 10.2.0.7-34svcpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*
- Sonicwall » Sma 400 FirmwareVersions from including (>=) 10.2.1.0 and up to, including, (<=) 10.2.1.0-17svcpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*
- Sonicwall » Sma 410 FirmwareVersions from including (>=) 10.2.0.0 and up to, including, (<=) 10.2.0.7-34svcpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*
- Sonicwall » Sma 410 FirmwareVersions from including (>=) 10.2.1.0 and up to, including, (<=) 10.2.1.0-17svcpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*
- cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*
- cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20034
29.85%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 97 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20034
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:P |
10.0
|
4.9
|
NIST | |
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
3.9
|
5.2
|
NIST |
CWE ids for CVE-2021-20034
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
-
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.Assigned by: PSIRT@sonicwall.com (Secondary)
References for CVE-2021-20034
-
http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.html
SonicWall SMA 10.2.1.0-17sv Password Reset ≈ Packet StormExploit;Third Party Advisory;VDB Entry
-
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021
Security AdvisoryVendor Advisory
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