CVE-2021-20034
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data tampering, service disruption.
- Exploit odds
- 81.8% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 81.8% in the next 30 days (EPSS).
- Severity: 9.1 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
- It meets the bar for Drop everything: critical, and exploited or very likely to be.
Details
- Published
- Last modified
- Exploit probability
- 81.8% · EPSS, next 30 days
- Weakness
- CWE-284 · Improper access control
- Record status
- Modified
Affected
- Sonicwall Sma 200 Firmware ≤ 9.0.0.10-28sv
- Sonicwall Sma 200 Firmware ≤ 10.2.0.7-34sv
- Sonicwall Sma 200 Firmware ≤ 10.2.1.0-17sv
- Sonicwall Sma 210 Firmware ≤ 9.0.0.10-28sv
- Sonicwall Sma 210 Firmware ≤ 10.2.0.7-34sv
- Sonicwall Sma 210 Firmware ≤ 10.2.1.0-17sv
- Sonicwall Sma 400 Firmware ≤ 9.0.0.10-28sv
- Sonicwall Sma 400 Firmware ≤ 10.2.0.7-34sv
Attack profile CVSS 3.1 · 9.1
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-20034.md and follow it. Check whether this project is affected by CVE-2021-20034. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021
References
- http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.html
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021
- http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.html
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021