SMA100: Improper Authentication
CVE-2023-5970 is a high-severity improper authentication vulnerability in SMA100 from SonicWall, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected SMA100 versions: 10.2.1.9-57sv and earlier versions. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.91% chance of exploitation within 30 days, higher than 61% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of SMA100 you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on psirt.global.sonicwall.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| SonicWall | SMA100 | 10.2.1.9-57sv and earlier versions | Not stated |
| SonicWall | Sma 200 Firmware | 10.2.1.9-57sv and earlier | Not stated |
| SonicWall | Sma 210 Firmware | 10.2.1.9-57sv and earlier | Not stated |
| SonicWall | Sma 400 Firmware | 10.2.1.9-57sv and earlier | Not stated |
| SonicWall | Sma 410 Firmware | 10.2.1.9-57sv and earlier | Not stated |
| SonicWall | Sma 500v Firmware | 10.2.1.9-57sv and earlier | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
Official description
Improper authentication in the SMA100 SSL-VPN virtual office portal allows a remote authenticated attacker to create an identical external domain user using accent characters, resulting in an MFA bypass.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in SMA100
- 7.2 High severity
- 8.8 High severity
- 8.8 High severity
- 8.1 High severity
- 8.1 High severity
- 7.5 High severity
Recent Improper Authentication vulnerabilities
- 7.8 High severity
- 9.8 Critical severity
- 9.4 Critical severity
- 9.4 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
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