eWeLink - Smart Home: Authentication Bypass by Primary Weakness
CVE-2023-6998 is a high-severity authentication bypass by primary weakness vulnerability in eWeLink - Smart Home from CoolKit Technology, with a CVSS 3.1 base score of 7.7 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, without any action from a user. The record lists version 5.2.0 as the first without the flaw, so updating eWeLink - Smart Home to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.24% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update eWeLink - Smart Home to 5.2.0 or a later version.
- Update Ewelink to 5.2.0 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| CoolKit Technology | eWeLink - Smart Home | before 5.2.0 | 5.2.0 |
| Coolkit | Ewelink | before 5.2.0 | 5.2.0 |
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
- LocalThe attacker needs local access or must trick a user into running something.
- 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
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.7 | High | CNA (cert.pl) |
| CVSS 3.1 | 7.7 | High | NVD |
Official description
Improper privilege management vulnerability in CoolKit Technology eWeLink on Android and iOS allows application lockscreen bypass.This issue affects eWeLink before 5.2.0.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass by Primary Weakness
The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
More Authentication Bypass by Primary Weakness vulnerabilities (CWE-305)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cert.pl/en/posts/2023/12/CVE-2023-6998/Third Party Advisory
- cert.pl/posts/2023/12/CVE-2023-6998/Third Party Advisory
Other references
- ewelink.cc/app/Product
Recent Authentication Bypass by Primary Weakness vulnerabilities
- 8.8 High severity
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