Linx-212 Firmware: Cleartext Storage of Sensitive Information
CVE-2023-46388 is a high-severity cleartext storage of sensitive information vulnerability in Linx-212 Firmware from Loytec, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Linx-212 Firmware versions: 6.2.4. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.52% chance of exploitation within 30 days, higher than 75% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Linx-212 Firmware you run against the affected versions below, and install the vendor's latest release.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Loytec | Linx-212 Firmware | 6.2.4 | Not stated |
| Loytec | Linx-151 Firmware | 7.2.4 | Not stated |
Version data comes from NVD's product matching. 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
- NoneNo account or login is needed.
- 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
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
Official description
LOYTEC electronics GmbH LINX-212 and LINX-151 devices (all versions) are vulnerable to Insecure Permissions via dpal_config.zml file. This vulnerability allows remote attackers to disclose smtp client account credentials and bypass email authentication.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Cleartext Storage of Sensitive Information
The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.
How developers prevent this class of flaw
- When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to encrypt the data at rest.
- In some systems/environments such as cloud, the use of double encryption (at both the software and hardware layer) might be required, and the developer might be solely responsible for both layers, instead of shared responsibility with the administrator of the broader system/environment.
More Cleartext Storage of Sensitive Information vulnerabilities (CWE-312)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- packetstormsecurity.com/files/175952/Loytec-L-INX-Automation-Servers-Information-Disclosure-Cleartext-Secrets…Third Party Advisory, VDB Entry
- seclists.org/fulldisclosure/2023/Nov/7Mailing List, Third Party Advisory
Other references
Other vulnerabilities in Linx-212 Firmware
- 7.5 High severity
- 8.2 High severity
- 7.5 High severity
Recent Cleartext Storage of Sensitive Information vulnerabilities
- 7.5 High severity
- 8.8 High severity
- 7.5 High severity
- 9.8 Critical severity
- 7.5 High severity
- 7.5 High severity
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